# Patent

## Title
Systems and methods for networked music playback

## Abstract

A control device is configured to (i) display transport controls to control playback by the control device, (ii) after connecting to a LAN, determine that one or more playback devices are connected to the LAN, (iii) detect input(s) to transfer playback to a particular playback device connected to the LAN, (iv) cause playback to be transferred to the particular playback device, including: (a) causing first cloud server(s) to transmit, to the particular playback device, resource locator(s) maintained in a shared playback queue, the resource locator(s) corresponding to respective locations of media content at second cloud server(s) of a streaming content service, (b) causing playback at the control device to be stopped, and (c) modifying the transport controls to control playback by the particular playback device, and (v) cause the particular playback device to retrieve the media content from second cloud server(s) of a streaming content service and play back the retrieved media content.

## Background
CROSS REFERENCE TO RELATED APPLICATIONS
This application is a continuation of U.S. patent application Ser. No. 17/710,425, filed on Mar. 31, 2022, which is a continuation of U.S. patent application Ser. No. 17/145,268, filed on Jan. 8, 2021, which is a continuation of U.S. patent application Ser. No. 17/019,174, filed on Sep. 11, 2020 and issued on Mar. 9, 2021 as U.S. Pat. No. 10,945,027, which is a continuation of U.S. patent application Ser. No. 16/389,906, filed on Apr. 19, 2019 and issued on Sep. 15, 2020 as U.S. Pat. No. 10,779,033, which is a continuation of U.S. patent application Ser. No. 15/872,500, filed on Jan. 16, 2018 and issued on Feb. 18, 2020 as U.S. Pat. No. 10,567,831, which is a continuation of U.S. patent application Ser. No. 14/520,578, filed on Oct. 22, 2014 and issued on Jan. 30, 2018 as U.S. Pat. No. 9,883,234, which is a continuation of U.S. patent application Ser. No. 13/341,237, filed on Dec. 30, 2011 and issued on May 15, 2017 as U.S. Pat. No. 9,654,821, all of which are incorporated herein by reference in their entirety.


FIELD OF THE DISCLOSURE
The disclosure is related to consumer electronics and, more particularly, to providing music for playback via one or more devices on a playback data network.
BACKGROUND
Technological advancements have increased the accessibility of music content, as well as other types of media, such as television content, movies, and interactive content. For example, a user can access audio, video, or both audio and video content over the Internet through an online store, an Internet radio station, an online music service, an online movie service, and the like, in addition to the more traditional avenues of accessing audio and video content. Demand for such audio and video content continues to surge. Given the high demand, technology used to access and play such content has likewise improved.



BRIEF DESCRIPTION OF THE DRAWINGS
Features, aspects, and advantages of the presently disclosed technology are better understood with regard to the following description, appended claims, and accompanying drawings where:
FIG. 1 shows an illustration of an example system in which embodiments of the methods and apparatus disclosed herein can be implemented;
FIG. 2A shows an illustration of an example zone player having a built-in amplifier and speakers;
FIG. 2B shows an illustration of an example zone player having a built-in amplifier and connected to external speakers;
FIG. 2C shows an illustration of an example zone player connected to an A/V receiver and speakers;
FIG. 3 shows an illustration of an example controller;
FIG. 4 shows an internal functional block diagram of an example zone player;
FIG. 5 shows an internal functional block diagram of an example controller;
FIG. 6 shows an example ad-hoc playback network;
FIG. 7 shows a system including a plurality of networks including a cloud-based network and at least one local playback network; and
FIGS. 8-11 show flow diagrams for methods to provide audio content to a local playback system.



In addition, the drawings are for the purpose of illustrating example embodiments, but it is understood that the present disclosure is not limited to the arrangements and instrumentality shown in the drawings.
DETAILED DESCRIPTION
I. Overview
Wired or wireless networks can be used to connect one or more multimedia playback devices for a home or other location playback network (e.g., a home music system). Certain examples provide automatic configuration of parameters of a playback device to be coupled to a network with reduced or minimum human intervention. For example, a wired and/or wireless ad-hoc network is established to facilitate communications among a group of devices. Music and/or other multimedia content can be shared among devices and/or groups of devices (also referred to herein as zones) associated with a playback network.
Certain embodiments facilitate streaming or otherwise providing music from a music-playing application (e.g., browser-based application, native music player, other multimedia application, and so on) to a multimedia content playback (e.g., SonosTM) system. Certain embodiments provide simple, easy-to-use and secure systems and methods for multimedia content playback across a plurality of systems and locations. Certain embodiments facilitate integration between content partners and a playback system as well as supporting maintenance of such content and system.
Although the following discloses example systems, methods, apparatus, and articles of manufacture including, among other components, firmware and/or software executed on hardware, it should be noted that such systems, methods, apparatus, and/or articles of manufacture are merely illustrative and should not be considered as limiting. For example, it is contemplated that any or all of these firmware, hardware, and/or software components could be embodied exclusively in hardware, exclusively in software, exclusively in firmware, or in any combination of hardware, software, and/or firmware. Accordingly, while the following describes example systems, methods, apparatus, and/or articles of manufacture, the examples provided are not the only way(s) to implement such systems, methods, apparatus, and/or articles of manufacture.
When any of the appended claims are read to cover a purely software and/or firmware implementation, at least one of the elements in at least one example is hereby expressly defined to include a tangible medium such as a memory, DVD, CD, Blu-ray, and so on, storing the software and/or firmware.
Reference herein to “embodiment” means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one example embodiment of the invention. The appearances of this phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. As such, the embodiments described herein, explicitly and implicitly understood by one skilled in the art, can be combined with other embodiments.
Certain embodiments provide a method to provide content to a local playback network. The example method includes identifying multimedia content from a content provider. The example method includes passing information regarding the multimedia content to a local playback system including one or more multimedia playback devices in response to a trigger. The example method includes facilitating play of the multimedia content via a local playback network associated with the local playback system.
Certain embodiments provide a computer readable storage medium including instructions for execution by a processor, the instructions, when executed, cause the processor to implement a method to provide content to a local playback network. The example method includes identifying multimedia content from a content provider. The example method includes passing information regarding the multimedia content to a local playback system including one or more multimedia playback devices in response to a trigger. The example method includes facilitating play of the multimedia content via a local playback network associated with the local playback system.
Certain embodiments provide a multimedia playback device including a wireless communication interface to communicate with a local playback network and a multimedia content source and a processor. The process is to identify multimedia content from the multimedia content source; pass information regarding the multimedia content to device on the local playback network in response to a trigger; and facilitate play of the multimedia content via the devices on the local playback network.
II. Example Environment
Referring now to the drawings, in which like numerals can refer to like parts throughout the figures, FIG. 1 shows an example system configuration 100 in which one or more of the method and/or apparatus disclosed herein can be practiced or implemented. By way of illustration, the system configuration 100 represents a home with multiple zones. Each zone, for example, represents a different room or space, such as an office, bathroom, bedroom, kitchen, dining room, family room, home theater room, utility or laundry room, and patio. While not shown here, a single zone can cover more than one room or space. One or more of zone players 102-124 are shown in each respective zone. A zone player 102-124, also referred to as a playback device, multimedia unit, speaker, and so on, provides audio, video, and/or audiovisual output. A controller 130 (e.g., shown in the kitchen for purposes of illustration) provides control to the system configuration 100. The system configuration 100 illustrates an example whole house audio system, though it is understood that the technology described herein is not limited to its particular place of application or to an expansive system like a whole house audio system 100 of FIG. 1.
FIGS. 2A, 2B, and 2C show example illustrations of zone players 200-204. The zone players 200-204 of FIGS. 2A, 2B, and 2C, respectively, can correspond to any of the zone players 102-124 of FIG. 1. While certain embodiments provide multiple zone players, an audio output can be generated using only a single zone player. FIG. 2A illustrates a zone player 200 including sound producing equipment 208 capable of generating sound or an audio output corresponding to a signal received (e.g., wirelessly and/or via a wired interface). The sound producing equipment 208 of the zone player 200 of FIG. 2A includes a built-in amplifier (not shown in this illustration) and speakers (e.g., a tweeter, a mid-range driver, and/or a subwoofer). In certain embodiments, the zone player 200 of FIG. 2A can be configured to play stereophonic audio or monaural audio. In some embodiments, the zone player 200 of FIG. 2A can be configured as a component in a combination of zone players to play stereophonic audio, monaural audio, and/or surround audio. As described in greater detail below, in some embodiments, the example zone player 200 of FIG. 2A can also transmit a second signal to, for example, other zone player(s) in the same or different zone(s), speaker(s), receiver(s), and so on. Transmission of the second signal can be part of, for example, a system in which multiple zone players, speakers, receivers, and so on, form a network to, for example, present media content in a synchronization or distributed manner.
The example zone player 202 of FIG. 2B includes a built-in amplifier (not shown in this illustration) to power a set of detached speakers 210. The speakers 210 of FIG. 2B can include, for example, any type of loudspeaker. The zone player 202 of FIG. 2B can communicate a signal corresponding to audio content to the detached speakers 210 via wired and/or wireless channels. Instead of receiving and generating audio content as in FIG. 2A, the zone player 202 of FIG. 2B receives the audio content and transmits the same (e.g., after processing the received signal) to the detached speakers 210. Similar to the example zone player 200 of FIG. 2A, in some embodiments the zone player 202 can transmit a second signal to, for example, other zone player(s) in the same or different zone(s), speaker(s), receiver(s), and so on.
The example zone player 204 of FIG. 2C does not include an amplifier, but allows a receiver 214, or another audio and/or video type device with built-in amplification, to connect to a data network 128 of FIG. 1 and to play audio received over the data network 128 via the receiver 214 and a set of detached speakers 216. In addition to the wired couplings shown in FIG. 2C, the detached speakers 216 can receive audio content via a wireless communication channel between the detached speakers 216 and, for example, the zone player 204 and/or the receiver 214. In some embodiments the zone player 202 can transmit a second signal to, for example, other zone player(s) in the same or different zone(s), speaker(s), receiver(s), and so on.
Example zone players include a “Sonos® S5,” “Sonos Play:5,” “Sonos Play:3,” “ZonePlayer 120,” and “ZonePlayer 90,” which are offered by Sonos, Inc. of Santa Barbara, Calif. Any other past, present, and/or future zone players can additionally or alternatively be used to implement the zone players of example embodiments disclosed herein. A zone player can also be referred to herein as a playback device, and a zone player is not limited to the particular examples illustrated in FIGS. 2A, 2B, and 2C. For example, a zone player can include a wired or wireless headphone. In other examples, a zone player might include a subwoofer. In yet other examples, a zone player can include a sound bar. In an example, a zone player can include or interact with a docking station for an Apple iPodTM or similar device. In some embodiments, a zone player can relay one or more signals received from, for example, a first zone player to another playback device. In some embodiments, a zone player can receive a first signal and generate an output corresponding to the first signal and, simultaneously or separately, can receive a second signal and transmit or relay the second signal to another zone player(s), speaker(s), receiver(s), and so on. Thus, an example zone player described herein can act as a playback device and, at the same time, operate as a hub in a network of zone players. In such instances, media content corresponding to the first signal can be different from the media content corresponding to the second signal.
FIG. 3 shows an example illustration of a wireless controller 300 in a docking station 302. The controller 300 can correspond to the controlling device 130 of FIG. 1. The controller 300 is provided with a touch screen 304 that allows a user to interact with the controller 300, for example, to retrieve and navigate a playlist of audio items, control operations of one or more zone players, and provide overall control of the system configuration 100. In certain embodiments, any number of controllers can be used to control the system configuration 100. In certain embodiments, there can be a limit on the number of controllers that can control the system configuration 100. The controllers might be wireless like wireless controller 300 or wired to the data network 128. Furthermore, an application running on any network-enabled portable devices, such as an iPhoneTM, iPadTM, AndroidTM powered phone, or any other smart phone or network-enabled device can be used as a controller by connecting to the data network 128. An application running on a laptop or desktop PC or Mac can also be used as a controller. Example controllers include a “Sonos® Controller 200,” “Sonos® Controller for iPhone,” “Sonos® Controller for iPad,” “Sonos® Controller for Android, “Sonos® Controller for Mac or PC,” which are offered by Sonos, Inc. of Santa Barbara, Calif. The flexibility of such an application and its ability to be ported to a new type of portable device is advantageous.
Referring back to the system configuration 100 of FIG. 1, a particular zone can contain one or more zone players. For example, the family room of FIG. 1 contains two zone players 106 and 108, while the kitchen is shown with one zone player 102. Zones can be dynamically configured by positioning a zone player in a room or space and assigning via the controller 130 the zone player to a new or existing zone. As such, zones can be created, combined with another zone, removed, and given a specific name (e.g., “Kitchen”), if so programmed. The zone players 102 to 124 are coupled directly or indirectly to a data network, such as the data network 128 shown in FIG. 1. The data network 128 is represented by an octagon in the figure to stand out from other components shown in the figure. While the data network 128 is shown in a single location, it is understood that such a network can be distributed in and around the system configuration 100.
Particularly, the data network 128 can be a wired network, a wireless network, or a combination of both. In some embodiments, one or more of the zone players 102-124 are wirelessly coupled to the data network 128 based on a proprietary mesh network. In some embodiments, one or more of the zone players 102-124 are wirelessly coupled to the data network 128 using a non-mesh topology. In some embodiments, one or more of the zone players 102-124 are coupled via a wire to the data network 128 using Ethernet or similar technology. In addition to the one or more zone players 102-124 connecting to the data network 128, the data network 128 can further allow access to a wide area network, such as the Internet.
In certain embodiments, the data network 128 can be created by connecting any of the zone players 102-124, or some other connecting device, to a broadband router. Other zone players 102-124 can then be added wired or wirelessly to the data network 128. For example, a zone player (e.g., any of zone players 102-124) can be added to the system configuration 100 by simply pressing a button on the zone player itself, which enables a connection to be made to the data network 128. The broadband router can be connected to an Internet Service Provider (ISP), for example. The broadband router can be used to form another data network within the system configuration 100, which can be used in other applications (e.g., web surfing). The data network 128 can also be used in other applications, if so programmed. Further, in certain embodiments, the data network 128 is the same network used for other applications in the household.
In certain embodiments, each zone can play from the same audio source as another zone or each zone can play from a different audio source. For example, someone can be grilling on the patio and listening to jazz music via zone player 124, while someone is preparing food in the kitchen and listening to classical music via zone player 102. Further, someone can be in the office listening to the same jazz music via zone player 110 that is playing on the patio via zone player 124. In some embodiments, the jazz music played via zone players 110 and 124 is played in synchrony. Synchronizing playback amongst zones allows for someone to pass through zones while seamlessly listening to the audio. Further, zones can be put into a “party mode” such that all associated zones will play audio in synchrony.
In certain embodiments, a zone contains two or more zone players. For example, the family room contains two zone players 106 and 108, and the home theater room contains at least zone players 116, 118, and 120. A zone can be configured to contain as many zone players as desired, and for example, the home theater room might contain additional zone players to play audio from a 5.1 channel or greater audio source (e.g., a movie encoded with 5.1 or greater audio channels). If a zone contains two or more zone players, such as the two zone players 106 and 108 in the family room, then the two zone players 106 and 108 can be configured to play the same audio source in synchrony, or the two zone players 106 and 108 can be paired to play two separate sounds in left and right channels, for example. In other words, the stereo effects of a sound can be reproduced or enhanced through the two zone players 106 and 108, one for the left sound and the other for the right sound. In certain embodiments, paired zone players can play audio in synchrony with other zone players.
In certain embodiments, three or more zone players can be configured to play various channels of audio that is encoded with three channels or more sound. For example, the home theater room shows zone players 116, 118, and 120. If the sound is encoded as 2.1 channel audio, then the zone player 116 can be configured to play left channel audio, the zone player 118 can be configured to play right channel audio, and the zone player 120 can be configured to play bass frequencies. Other configurations are possible and depend on the number of zone players and the type of audio. Further, a particular zone can be configured to play a 5.1 channel audio in one instance, such as when playing audio from a movie, and then dynamically switch to play stereo, such as when playing audio from a two channel source.
In certain embodiments, two or more zone players can be sonically consolidated to form a single, consolidated zone player. A consolidated zone player (though made up of multiple, separate devices) can be configured to process and reproduce sound differently than an unconsolidated zone player or zone players that are paired, because a consolidated zone player will have additional speaker drivers from which sound can be passed. The consolidated zone player can further be paired with a single zone player or yet another consolidated zone player. Each playback device of a consolidated playback device is preferably set in a consolidated mode.
According to some embodiments, one can continue to do any of: group, consolidate, and pair zone players, for example, until a desired configuration is complete. The actions of grouping, consolidation, and pairing are preferably performed through a control interface, such as using controller 130, and not by physically connecting and re-connecting speaker wire, for example, to individual, discrete speakers to create different configurations. As such, certain embodiments described herein provide a more flexible and dynamic platform through which sound reproduction can be offered to the end-user.
Sources of audio content to be played by zone players 102-124 are numerous. Music from a personal library stored on a computer or networked-attached storage (NAS) can be accessed via the data network 128 and played. Internet radio stations, shows, and podcasts can be accessed via the data network 128. Music services that let a user stream and download music and audio content can be accessed via the data network 128. Further, music can be obtained from traditional sources, such as a turntable or CD player, via a line-in connection to a zone player, for example. Audio content can also be accessed through AirPlayTM wireless technology by Apple, Inc., for example. Audio content received from one or more sources can be shared amongst the zone players 102 to 124 via the data network 128 and/or the controller 130. The above-disclosed sources of audio content are referred to herein as network-based audio information sources. However, network-based audio information sources are not limited thereto.
The example home theater zone players 116, 118, 120 are coupled to an audio information source such as a television 132. In some examples, the television 132 is used as a source of audio for the home theater zone players 116, 118, 120, while in other examples audio information from the television 132 can be shared with any of the zone players 102-124 in the audio system 100.
III. Example Playback Device
Referring now to FIG. 4, there is shown an example functional block diagram of a zone player 400 in accordance with an embodiment. The zone player 400 of FIG. 4 includes a network interface 402, a processor 408, a memory 410, an audio processing component 412, a module 414, an audio amplifier 416, and a speaker unit 418 coupled to the audio amplifier 416. FIG. 2A shows an example illustration of such a zone player. Other types of zone players can not include the speaker unit 418 (e.g., such as shown in FIG. 2B) or the audio amplifier 416 (e.g., such as shown in FIG. 2C). Further, it is contemplated that the zone player 400 can be integrated into another component. For example, the zone player 400 could be constructed as part of a lamp for indoor or outdoor use.
Referring back to FIG. 4, the network interface 402 facilitates a data flow between zone players and other devices on a data network (e.g., the data network 128 of FIG. 1) and the zone player 400. In some embodiments, the network interface 402 can manage the assembling of an audio source or file into smaller packets that are to be transmitted over the data network or reassembles received packets into the original source or file. In some embodiments, the network interface 402 can further handle the address part of each packet so that it gets to the right destination or intercepts packets destined for the zone player 400. Accordingly, in certain embodiments, each of the packets includes an Internet Protocol (IP)-based source address as well as an IP-based destination address.
In some embodiments, the network interface 402 can include one or both of a wireless interface 404 and a wired interface 406. The wireless interface 404, also referred to as an RF interface, provides network interface functions for the zone player 400 to wirelessly communicate with other devices (e.g., other zone player(s), speaker(s), receiver(s), component(s) associated with the data network 128, and so on) in accordance with a communication protocol (e.g., any of the wireless standards IEEE 802.11a, 802.11b, 802.11g, 802.11n, or 802.15). To receive wireless signals and to provide the wireless signals to the wireless interface 404 and to transmit wireless signals, the zone player 400 of FIG. 4 includes one or more antennas 420. The wired interface 406 provides network interface functions for the zone player 400 to communicate over a wire with other devices in accordance with a communication protocol (e.g., IEEE 802.3). In some embodiments, a zone player includes both of the interfaces 404 and 406. In some embodiments, a zone player 400 includes only the wireless interface 404 or the wired interface 406.
In some embodiments, the processor 408 is a clock-driven electronic device that is configured to process input data according to instructions stored in memory 410. The memory 410 is data storage that can be loaded with one or more software modules 414, which can be executed by the processor 408 to achieve certain tasks. In the illustrated embodiment, the memory 410 is a tangible machine readable medium storing instructions that can be executed by the processor 408. In some embodiments, a task might be for the zone player 400 to retrieve audio data from another zone player or a device on a network. In some embodiments, a task might be for the zone player 400 to send audio data to another zone player or device on a network. In some embodiments, a task might be for the zone player 400 to synchronize playback of audio with one or more additional zone players. In some embodiments, a task might be to pair the zone player 400 with one or more zone players to create a multi-channel audio environment. Additional or alternative tasks can be achieved via the one or more software modules 414 and the processor 408.
The audio processing component 412 can include one or more digital-to-analog converters (DAC), an audio preprocessing component, an audio enhancement component or a digital signal processor, and so on. In certain embodiments, the audio that is retrieved via the network interface 402 is processed and/or intentionally altered by the audio processing component 412. Further, the audio processing component 412 can produce analog audio signals. The processed analog audio signals are then provided to the audio amplifier 416 for play back through speakers 418. In addition, the audio processing component 412 can include necessary circuitry to process analog or digital signals as inputs to play from zone player 400, send to another zone player on a network, or both play and send to another zone player on the network. An example input includes a line-in connection (e.g., an auto-detecting 3.5 mm audio line-in connection).
The audio amplifier 416 is a device that amplifies audio signals to a level for driving one or more speakers 418. The one or more speakers 418 can include an individual transducer (e.g., a “driver”) or a complete speaker system that includes an enclosure including one or more drivers. A particular driver can be a subwoofer (for low frequencies), a mid-range driver (middle frequencies), and a tweeter (high frequencies), for example. An enclosure can be sealed or ported, for example.
A zone player 400 can also be referred to herein as a playback device. An example playback device includes a Sonos® Play:5, which is manufactured by Sonos, Inc. of Santa Barbara, Calif. The Play:5 is an example zone player with a built-in amplifier and speakers. In particular, the Play:5 is a five-driver speaker system that includes two tweeters, two mid-range drivers, and one subwoofer. When playing audio content via the Play:5, the left audio data of a track is sent out of the left tweeter and left mid-range driver, the right audio data of a track is sent out of the right tweeter and the right mid-range driver, and mono bass is sent out of the subwoofer. Further, both mid-range drivers and both tweeters have the same equalization (or substantially the same equalization). That is, they are both sent the same frequencies, just from different channels of audio. Audio from Internet radio stations, online music and video services, downloaded music, analog audio inputs, television, DVD, and so on, can be played from a Sonos® Play:5. While the Play:5 is an example of a zone player with speakers, it is understood that a zone player with speakers is not limited to one with a certain number of speakers (e.g., five speakers as in the Play:5), but rather can contain one or more speakers. Further, a zone player can be part of another device, which might even serve a purpose different than audio (e.g., a lamp).
IV. Example Controller
Referring now to FIG. 5, there is shown an example controller 500, which can correspond to the controlling device 130 in FIG. 1. The controller 500 can be used to facilitate the control of multi-media applications, automation and others in a system. In particular, the controller 500 is configured to facilitate a selection of a plurality of audio sources available on the network and enable control of one or more zone players (e.g., the zone players 102-124 in FIG. 1) through a wireless network interface 508. According to one embodiment, the wireless communications is based on an industry standard (e.g., infrared, radio, wireless standards IEEE 802.11a, 802.11b 802.11g, 802.11n, or 802.15). Further, when a particular audio is being accessed via the controller 500 or being played via a zone player, a picture (e.g., album art) or any other data, associated with the audio source can be transmitted from a zone player or other electronic device to the controller 500 for display.
The controller 500 is provided with a screen 502 and an input interface 514 that allows a user to interact with the controller 500, for example, to navigate a playlist of many multimedia items and to control operations of one or more zone players. The screen 502 on the controller 500 can be an LCD screen, for example. The screen 500 communicates with and is commanded by a screen driver 504 that is controlled by a microcontroller (e.g., a processor) 506. The memory 510 can be loaded with one or more application modules 512 that can be executed by the microcontroller 506 with or without a user input via the user interface 514 to achieve certain tasks. In some embodiments, an application module 512 is configured to facilitate grouping a number of selected zone players into a zone group and synchronizing the zone players for audio play back. In some embodiments, an application module 512 is configured to control the audio sounds (e.g., volume) of the zone players in a zone group. In operation, when the microcontroller 506 executes one or more of the application modules 512, the screen driver 504 generates control signals to drive the screen 502 to display an application specific user interface accordingly.
The controller 500 includes a network interface 508 that facilitates wireless communication with a zone player. In some embodiments, the commands such as volume control and audio playback synchronization are sent via the network interface 508. In some embodiments, a saved zone group configuration is transmitted between a zone player and a controller via the network interface 508. The controller 500 can control one or more zone players, such as 102-124 of FIG. 1. There can be more than one controller for a particular system. Further, a controller can be integrated into a zone player.
It should be noted that other network-enabled devices such as an iPhone®, iPad® or any other smart phone or network-enabled device (e.g., a networked computer such as a PC or Mac®) can also be used as a controller to interact or control zone players in a particular environment. In some embodiments, a software application or upgrade can be downloaded onto a network enabled device to perform the functions described herein.
In certain embodiments, a user can create a zone group including at least two zone players from the controller 500. The zone players in the zone group can play audio in a synchronized fashion, such that all of the zone players in the zone group play back an identical audio source or a list of identical audio sources in a synchronized manner such that no (or substantially no) audible delays or hiccups could be heard. Similarly, in some embodiments, when a user increases the audio volume of the group from the controller 500, the signals or data of increasing the audio volume for the group are sent to one of the zone players and causes other zone players in the group to be increased together in volume.
A user via the controller 500 can group zone players into a zone group by activating a “Link Zones” or “Add Zone” soft button, or de-grouping a zone group by activating an “Unlink Zones” or “Drop Zone” button. For example, one mechanism for ‘joining’ zone players together for audio play back is to link a number of zone players together to form a group. To link a number of zone players together, a user can manually link each zone player or room one after the other. For example, assume that there is a multi-zone system that includes the following zones: Bathroom, Bedroom, Den, Dining Room, Family Room, and Foyer.
In certain embodiments, a user can link any number of the six zone players, for example, by starting with a single zone and then manually linking each zone to that zone.
In certain embodiments, a set of zones can be dynamically linked together using a command to create a zone scene or theme (subsequent to first creating the zone scene). For instance, a “Morning” zone scene command can link the Bedroom, Office, and Kitchen zones together in one action. Without this single command, the user would need to manually and individually link each zone. The single command might include a mouse click, a double mouse click, a button press, a gesture, or some other programmed action. Other kinds of zone scenes can be programmed.
In certain embodiments, a zone scene can be triggered based on time (e.g., an alarm clock function). For instance, a zone scene can be set to apply at 8:00 am. The system can link appropriate zones automatically, set specific music to play, and then stop the music after a defined duration. Although any particular zone can be triggered to an “On” or “Off” state based on time, for example, a zone scene enables any zone(s) linked to the scene to play a predefined audio (e.g., a favorable song, a predefined playlist) at a specific time and/or for a specific duration. If, for any reason, the scheduled music failed to be played (e.g., an empty playlist, no connection to a share, failed Universal Plug and Play (UPnP), no Internet connection for an Internet Radio station, and so on), a backup buzzer can be programmed to sound. The buzzer can include a sound file that is stored in a zone player, for example.
V. Example Ad-Hoc Network
Certain particular examples will now be provided in connection with FIGS. 6-8B to describe, for purposes of illustration only, certain base systems and methods to provide and facilitate connection to a playback network. FIG. 6 shows that there are three zone players 602, 604 and 606 and a controller 608 that form a network branch that is also referred to as an Ad-Hoc network 610. The network 610 may be wireless, wired, or a combination of wired and wireless. In general, an Ad-Hoc (or “spontaneous”) network is a local area network or other small network in which there is no one access point for all traffic. With an established Ad-Hoc network 610, the devices 602, 604, 606 and 608 can all communicate with each other in a “peer-to-peer” style of communication, for example. Furthermore, devices may come/and go from the network 610, and the network 610 will automatically reconfigure itself without needing the user to reconfigure the network 610.
Using the Ad-Hoc network 610, the devices 602, 604, 606, and 608 can share or exchange one or more audio sources and be grouped to play the same or different audio sources. For example, the devices 602 and 604 are grouped to playback one piece of music, and at the same time, the device 606 plays back another piece of music. In other words, the devices 602, 604, 606 and 608, as shown in FIG. 6, form a HOUSEHOLD that distributes audio and/or reproduces sound. As used herein, the term HOUSEHOLD (provided in uppercase letters to disambiguate from the user's domicile) is used to represent a collection of networked devices that are cooperating to provide an application or service. An instance of a HOUSEHOLD is identified with a household 10 (or household identifier).
In certain embodiments, a household identifier (HHID) is a short string or an identifier that is computer-generated to help ensure that it is unique. Accordingly, the network 610 can be characterized by a unique HHID and a unique set of configuration variables or parameters, such as channels (e.g., respective frequency bands), SSID (a sequence of alphanumeric characters as a name of a wireless network), and WEP keys (wired equivalent privacy or other security keys). In certain embodiments, SSID is set to be the same as HHID.
In certain embodiments, each HOUSEHOLD includes two types of network nodes: a control point (CP) and a zone player (ZP). The control point controls an overall network setup process and sequencing, including an automatic generation of required network parameters (e.g., WEP keys). In an embodiment, the CP also provides the user with a HOUSEHOLD configuration user interface. The CP function can be provided by a computer running a CP application module, or by a handheld controller (e.g., the controller 308) also running a CP application module, for example. The zone player is any other device on the network that is placed to participate in the automatic configuration process. The ZP, as a notation used herein, includes the controller 308 or a computing device, for example.
In certain embodiments, configuration of a HOUSEHOLD involves multiple CPs and ZPs that rendezvous and establish a known configuration such that they can use a standard networking protocol (e.g., IP over Wired or Wireless Ethernet) for communication. In an embodiment, two types of networks/protocols are employed: Ethernet 802.3 and Wireless 802.11g. Interconnections between a CP and a ZP can use either of the networks/protocols. A device in the system as a member of a HOUSEHOLD can connect to both networks simultaneously. In an environment that has both networks in use, it is assumed that at least one device in a system is connected to both as a bridging device, thus providing bridging services between wired/wireless networks for others. The zone player 606 in FIG. 6 is shown to be connected to both networks, for example. The connectivity to the network 612 is based on Ethernet while the connectivity to other devices 602, 604 and 608 is based on Wireless. It is understood, however, that in some embodiments each zone player 606, 604, 602 may access the Internet when retrieving media from the cloud (e.g., Internet) via the bridging device. For example, zone player 602 may contain a uniform resource locator (URL) that specifies an address to a particular audio track in the cloud. Using the URL, the zone player 602 may retrieve the audio track from the cloud, and ultimately play the audio out of one or more zone players.
VI. Example Music Sharing and Playback Configuration
Certain embodiments enable a user to stream music from a music-playing application (e.g., browser-based application, native music player, other multimedia application, and so on) to a local multimedia content playback (e.g., SonosTM) system. Certain embodiments provide secure systems and methods for multimedia content playback across a plurality of systems and locations. Certain embodiments facilitate integration between content partners and a playback system as well as supporting maintenance of such content and system.
FIG. 7 shows a system including a plurality of networks including a cloud-based network and at least one local playback network. The network includes a plurality of playback devices or players, though it is understood that the network may contain only one playback device. In certain embodiments, each player has an ability to retrieve its content for playback. Control and content retrieval can be distributed or centralized, for example. Input can include streaming content provider input, third party application input, mobile device input, user input, and/or other playback network input into the cloud for local distribution and playback.
As illustrated by the example system 700 of FIG. 7, a plurality of content providers 720-750 can be connected to one or more local playback networks 760-770 via a cloud and/or other network 710. Using the cloud 710, a multimedia playback system 720 (e.g., SonosTM) a mobile device 730, a third party application 740, a retail location 750, and so on can provide multimedia content (requested or otherwise) to local playback networks 760, 770. Within each local network 760, 770, a controller 762, 772 and/or playback device 764, 774 can provide a song identifier, song name, playlist identifier, playlist name, genre, preference, and so on, and/or simply receive content from a connected system via the cloud.
For example, a user listens to a third party music application (e.g., PandoraTM, RhapsodyTM, SpotifyTM, and so on) on her smart phone while commuting. She's enjoying the current channel and, as she walks in the door to her home, selects an option to continue playing that channel on her household music playback system (e.g., SonosTM). The playback system picks up from the same spot on the selected channel that was on her phone and outputs that content (e.g., that song) on speakers and/or other playback devices connected to the household playback system. A uniform resource indicator (URI) (e.g., a uniform resource locator (URL)) can be passed to a playback device to fetch content from a cloud and/or other networked source, for example. A playback device, such as a zone player, can fetch content on its own without use of a controller, for example. Once the zone player has a URL (or some other identification or address) for a song and/or playlist, the zone player can run on its own to fetch the content. Songs and/or other multimedia content can be retrieved from the Internet rather than a local device (e.g., a compact disc (CD)), for example. A third party application can open or utilize an application programming interface (API) to pass music to the household playback system without tight coupling to that household playback system.
In another example of an application determining a playlist and/or other content for playback, a user enjoys listening to music on an online music service (e.g., turntable.fm or other virtual room that a user can enter to choose from a plurality of online disc jockeys (DJs) deciding what to play next) using his Mac Book ProTM at home. He likes the unique user experience the service offers, and he frequently hops from room to room discovering new music. To maximize sound quality, he plays the music on his household playback system (e.g., SonosTM). A button or other indicator can be added to the turntable.fm Web application to switch the content being played to the playback system for output (e.g., to the SonosTM system rather than or in addition to the Mac BookTM). While Web-based applications typically do not have access to items on a local network, certain embodiments enable a third-party Web-based application (e.g., Turntable.fm) to talk to a playback system (e.g., SonosTM) in a certain way (e.g., may have to log in with a username and password), and the identified user has the website send audio or audio and video down to a playback device (e.g., a zone player) on the playback system local network to play music there (or some other media).
In another example, a first user creates a playlist (e.g., a SpotifyTM playlist). The first user visits a second user's house, pulls out her smart phone and shares her playlist by playing it on the second user's household playback (e.g., SonosTM) system using her third party (e.g., SpotifyTM) application. The first user may also go to the third party content provider's (e.g., Spotify'sTM) website and share her playlist on the second user's playback system.
Thus, certain embodiments provide cross-service linking such that a song identifier can be passed from one user and/or service to another to be fetched and played. A user having a playlist on his or her phone can visit a friend and, using her account on her friend's system, play a song to which she has an access right. A retrieved song can streamed locally to a user's phone, or an application can pass a song identifier to a local playback system which looks up the song identifier and finds an available audio stream to which the user has a right to play and then plays that song.
In another example, a user is staying in a hotel room or other facility including a local playback network. For example, a speaker and/or other playback device (e.g., a SonosTM Play:3, Play: 5 and so on) in a hotel room can be utilized to play multimedia content to which the user has access from his or her playback network account, streaming audio source, third party application, and so on. Content can be output to one or more devices based on availability, access, configuration, priority, preference, and so on. In certain embodiments, a playback network includes a plurality of nodes, and each node has a capability to play sound in response to an input. Requested output is provided to a most logical connection, for example.
In certain embodiments, a phone device, a television device, and so on can be used to play music, audio, video and/or other multimedia content. In an example, a push button on a microphone or household intercom system to tell the kids dinner is ready is provided over the local playback network.
FIG. 8 shows a flow diagram for a method 800 to provide audio content to a local playback system. In the example method 800 of FIG. 8, a third party application acts as a “virtual line-in” to the local playback system. At block 810, streaming of music or other content from a third party application to a local content playback system is triggered. For example, a “Play to Sonos” button is pressed on a RhapsodyTM application. At block 820, content is streamed to one or more components in a household playback network. The music may be streamed to predetermined zones or players in a household, for example. The music may be further directed to be played in different zones or players throughout the household. Playback on the local network can be facilitated to one or more zones/players based on a configuration (e.g., a zone scene, theme, and so on). Thus, certain embodiments allow a large degree of flexibility in where the music is actually played. For example, the music can be played in the kitchen, the family room, the patio, and so on. Further, the music may be redirected to different zones.
At block 830, the incoming content (e.g., audio) stream is provided directly from a third party application or other external source to the local playback network for playback. For example, rather than passing track identifiers, an audio stream is provided to a Sonos household system for playback to one or more configured zones. At block 840, the local playback system consumes the stream and plays it as it would other content on the local playback (e.g., SonosTM) network (e.g., via zones and so on). At block 850, a playback device (e.g., a zone player, Play:3TM, Play:5TM, and so on) adds timing information to the streaming content signal (e.g., the device takes the streaming audio signal and repackages it for local synchronized playback). In some embodiments, timing information is not added to the signal unless two or more playback devices are configured to play the audio in synchrony.
FIG. 9 shows a flow diagram for a method 900 to provide audio content to a local playback system. In the example method 900 of FIG. 9, a uniform resource indicator (URI) handler approach is provided for content output. At block 910, a link or other reference is embedded in a third party application (e.g., FacebookTM or Twitter). At block 920, when the link is selected (e.g., clicked), a local playback (e.g., SonosTM) controller, if available, is launched. At block 930, the application (e.g., accessed on a phone, tablet, computer, and so on) passes a URI for associated content (e.g., an audio track and so on) to a local playback system (e.g., SonosTM) controller. At block 940, the local controller outputs the associated content (e.g., plays the music) via the URI. For example, music is streamed from the cloud to one or more playback devices on the local playback network.
In certain embodiments, an application associated with the operating system can register to handle all URIs (URLs) that start with a certain prefix and can define how data is encoded into those URLs so a local playback system application can generate a link (e.g., “sonos:”) and put that link into a message (e.g., email, text message, instant message (IM), etc.). The local playback application registered to handle such URLs can parse the URLs to determine what song, playlist, streaming radio station, etc., to play. This launches the controller application. For example, if a first listener likes a song and tweets that song, TwitterTM can include a clickable link which launches a playback application and starts the music playing on a local playback system if the local system can find the song (e.g., if have the application, if have rights/access to the song, etc.). In certain embodiments, the system knows to trigger the receiving user's system rather than the sending user's system to play associated content based on the transmitted link/identifier.
For example, an application can register with the system to handle all URLs that start with a custom prefix (e.g., an HTTP “scheme”). For instance, Sonos controller apps can register to handle any URL that begins with “sonos:” or “x-sonos:”. In certain embodiments, a playback system provider can define and publish the format of its URLs so that any third party application can create a link or reference to content. A large amount of data can be encoded into a URL using query parameters, for example.
In an example, when an application tries to “open” or “browse” to a URL, the system checks to see if the scheme of the URL matches the “sonos:” scheme that has been registered with the application. If a URL handler application is found, the system launches that application (e.g., the application can but does not need to be running in the background) and passes the URL to the application. The application then parses the URL and executes functionality based on the data in the URL. For example, the URL can contain the name of a music service and a playlist identifier from that service, plus the name of a SonosTM Zone Player, causing the Sonos controller to start that playlist playing on that zone.
FIG. 10 shows a flow diagram for a method 1000 to provide audio content to a local playback system. In the example method 1000 of FIG. 10, at block 1010, a link or other reference is embedded in a third party application (e.g., FacebookTM). At block 1020, when the link is selected, a playback system (e.g., SonosTM) server is contacted and provided with information regarding selected content for playback. For example, rather than launching a local controller application, a server is contacted regarding music for playback on a local network. At block 1030, using the provided information, the server identifies and provides the content locally on a user's local playback system. For example, the server can then start playing the music directly on the user's SonosTM system (e.g., without going through a SonosTM controller application).
In certain embodiments, a “single sign-on” technology is provided so that the user does not need to re-enter a username and password in order to authenticate to the playback server. Example single sign-on technologies include Facebook ConnectTM, Windows Live IDTM, etc.
In certain embodiments, instead of using a specialized link, such as a “sonos:” link, a normal URL can be used to point to a playback system (e.g., SonosTM) webserver, which generates links with special data embedded in the link. A playback system is identified, and content identified by the URL can be playing at via the local playback network (e.g., mesh network configured for home, hotel room, etc.). Parameters such as authentication, security, location, and so on can be configured for local playback of remote content.
FIG. 11 shows a flow diagram for a method 1100 to provide audio content to a local playback system. The example method 1100 of FIG. 11 provides a “throw it over the wall” approach to content delivery to a local playback system. At block 1110, a third party application provides a multimedia playback device (e.g., a SonosTM zone player (ZP)) with enough information about content (e.g., an audio track) so that, at block 1120, the local playback system (e.g., SonosNetTM) can directly access a source of the content and, at block 1130, play the content directly off the network (e.g., the Internet) or cloud.
In certain embodiments, a local playback controller application is not involved. Information passed over to the local playback device may include an identifier for a single track, a playlist, a streaming radio station, a programmed radio station, and so on. This information can also include a current play position within a list to enable near-seamless “handoff” of music from a portable device to a local playback system. Once the music information is handed from the third-party application to the local playback system, there is no further synchronization between the two systems.
A connection between the third-party application and the local playback device (e.g., Sonos ZonePlayerTM) can be direct over a local area network (LAN), remote through a proxy server in the cloud, and so on. A LAN delivery approach may be easier to integrate into “native” applications (e.g., applications written for iOS or Android), and a proxy server approach may be easier for third party applications that are browser-based, for example.
In certain embodiments, information is provided from a third party application to a local playback system without being routed through or by a controller application. Here, the third party application is communicating with the multimedia playback device (e.g., a Sonos ZonePlayerTM). Information can be passed locally, rather than through the Internet, for example. The local playback device accesses the Internet to find content to stream, and the third party application takes the place of the controller application (e.g., throw it over the wall—the application passes information and the local playback system runs it).
Certain embodiments provide an approach similar to the “throw it over the wall” or one way communication approach of FIG. 11 except that the third party application not only tells the local playback system what to play, but also maintains two-way communication with the local playback (e.g., SonosTM) system. Two-way communication helps enable features such as keeping a local playback queue synchronized with a queue that the user is editing/managing in the third party application; allow the third party application to know what is currently playing on the local playback system; allow integrated transport control between the third party application and the local playback system; and so on.
In certain embodiments, a local playback system can pass information back to a third party application to indicate a current point of playback (e.g., now playing a third song in a playlist, fourth song in the playlist, and so on). The local playback system can pass parameter information, such as a change in volume, from a local multimedia playback device to the third party application so the application can reflect the change in volume to the user via its graphical user interface. The third party application can instruct the local playback system to skip a song, go to a certain location, and so on.
Certain embodiments provide a third party mode that allows users to select from any local playback network (e.g., SonosTM) controller to listen to audio from one or more third party applications on their smartphones or tablets (e.g., AndroidTM devices). For example, a user may be using a local playback network controller application and now wants a third party application to appear as an audio source within the controller application. The user can then select the controller application that he or she wishes to play audio from the third party application, for example.
Certain embodiments provide queue management to allow a third party application to control a local playback queue. That is, the local playback system has a queue, but the third party application allows users to add, delete and so on from the queue, for example. Rather than switch from content that the user is currently playing, the local playback system allows a user to create a playlist on the fly. For example, if last.fm users vote that they do not like a song and it should be skipped, then the local playback system will skip it.
Certain embodiments allow a third party application to override a local playback queue with its own application-specific queue. The local playback system periodically fetches a short list of tracks to play next. The list of tracks to play is determined by the third-party application, for example. In certain embodiments, a shared queue is provided between the local playback system and the third party application to keep the local system and application synchronized.
Certain embodiments allow control of playback system functions and/or settings via an external (e.g., third party) application. For example, a local playback system can allow volume control, play/pause, and so on and can interact with an application running on a given platform/operating system (OS). Certain embodiments provide a Web API that can be used to access functionality.
Certain embodiments facilitate control of a local playback system from outside a household or other location at which the local playback network is configured. For example, a user can queue up music while away from his or her house. The application can facilitate setup and/or configuration. For example, a third party application may ask the user to enter a Sonos customer email address and password. The application can then make a request to a Sonos server in the cloud to determine the zone groups on which music can be played.
Various inventions have been described in sufficient detail with a certain degree of particularity. It is understood to those skilled in the art that the present disclosure of embodiments has been made by way of examples only and that numerous changes in the arrangement and combination of parts can be resorted without departing from the spirit and scope of the present disclosure as claimed. While the embodiments discussed herein can appear to include some limitations as to the presentation of the information units, in terms of the format and arrangement, the embodiments have applicability well beyond such embodiment, which can be appreciated by those skilled in the art. Accordingly, the scope of the present disclosure is defined by the appended claims rather than the forgoing description of embodiments.

## Claims

1. A control device comprising:
at least one processor;
a non-transitory computer-readable medium; and
program instructions stored on the non-transitory computer-readable medium that are executable by the at least one processor such that the control device is configured to:
cause a graphical interface to display a control interface comprising one or more transport controls to control playback by the control device;
after connecting to a local area network via a network interface, determine that one or more playback devices are connected to the local area network;
cause the graphical interface to display a selectable option for transferring playback from the control device;
detect a first set of inputs to transfer playback from the control device to a particular playback device, wherein the first set of inputs comprises: (i) a selection of the selectable option for transferring playback from the control device and (ii) a selection of the particular playback device from the one or more playback devices that are connected to the local area network;
after detecting the first set of inputs to transfer playback from the control device to the particular playback device, cause playback to be transferred from the control device to the particular playback device, wherein transferring playback from the control device to the particular playback device comprises:
(a) causing one or more first cloud servers to transmit, to the particular playback device, one or more first resource locators maintained in a shared playback queue, the one or more first resource locators corresponding to respective locations of first media content at one or more second cloud servers of a streaming content service;
(b) causing playback at the control device to be stopped; and
(c) modifying the one or more transport controls of the control interface to control playback by the particular playback device;

cause the particular playback device to retrieve the first media content from the one or more second cloud servers of the streaming content service and play back the retrieved first media content;
detect a second set of inputs to transfer playback from the control device to a particular zone group of a media playback system that comprises a first zone and a second zone, wherein the first zone comprises the particular playback device and the second zone comprises at least one additional playback device, and wherein the second set of inputs comprises: (i) a selection of the selectable option for transferring playback from the control device and (ii) a selection of the particular zone group;
after detecting the second set of inputs to transfer playback from the control device to the particular zone group, cause playback to be transferred from the control device to the particular zone group, wherein transferring playback from the control device to the particular zone group comprises:
(a) causing the one or more first cloud servers to transmit, to the particular playback device, one or more second resource locators maintained in the shared playback queue, the one or more second resource locators corresponding to respective locations of second media content at the one or more second cloud servers of the streaming content service;
(b) causing playback at the control device to be stopped; and
(c) modifying the one or more transport controls of the control interface to control playback by the particular playback device and the at least one additional playback device in synchrony; and

cause the particular playback device to retrieve the second media content from the one or more second cloud servers of the streaming content service and play back the retrieved second media content in synchrony with the at least one additional playback device.

2. The control device of claim 1, wherein causing the one or more first cloud servers to transmit, to the particular playback device, the one or more first resource locators comprises causing the one or more first cloud servers to transmit the one or more first resource locators for addition to a local playback queue on the particular playback device.

3. The control device of claim 1, wherein the shared playback queue is stored by the one or more first cloud servers.

4. The control device of claim 1, wherein the shared playback queue is not stored by the one or more first cloud servers.

5. The control device of claim 1, wherein the shared playback queue is not stored by the control device.

6. The control device of claim 1, wherein the shared playback queue is stored by neither the one or more first cloud servers nor the control device.

7. The control device of claim 1, further comprising program instructions stored on the non-transitory computer-readable medium that are executable by the at least one processor such that the control device is configured to:
receive an indication that playback of the first media content by the particular playback device has been modified; and
based on the indication that playback of the first media content by the particular playback device has been modified, update the graphical interface to reflect the modification.

8. The control device of claim 7, wherein the indication that playback of the first media content by the particular playback device has been modified comprises an indication of a change in a playback position within the first media content.

9. The control device of claim 7, wherein the program instructions that are executable by the at least one processor such that the control device is configured to receive the indication that playback of the first media content by the particular playback device has been modified comprise program instructions that are executable by the at least one processor such that the control device is configured to receive, from the one or more first cloud servers, the indication that playback of the first media content by the particular playback device has been modified.

10. The control device of claim 1, wherein the program instructions that are executable by the at least one processor such that the control device is configured to detect the first set of inputs to transfer playback from the control device to the particular playback device comprise program instructions that are executable by the at least one processor such that the control device is configured to detect a set of inputs to transfer playback from the control device to a particular zone of the media playback system that comprises the particular playback device as a first channel of a stereo pair and an additional playback device as a second channel of the stereo pair;
wherein the program instructions that are executable by the at least one processor such that control device is configured to modify the one or more transport controls of the control interface to control playback by the particular playback device comprise program instructions that are executable by the at least one processor such that the control device is configured to modify the one or more transport controls of the control interface to control playback by the particular playback device and the additional playback device; and
wherein the program instructions that are executable by the at least one processor such that the control device is configured to cause the particular playback device to play back the retrieved first media content comprise program instructions that are executable by the at least one processor such that the control device is configured to cause the particular playback device and the additional playback device to play back the first media content as the stereo pair.

11. The control devince of claim 1, further comprising program instructions on the non-transitory computer-readable medium that are executable by the at least one processor such that the control device is configured to:
detect a third set of inputs to transfer playback from the particular playback device back to the control device, and wherein transferring playback from the particular playback device back to the control device comprises:
causing playback at the particular playback device to be stopped; and
modifying the one or more transport controls of the control interface to control playback by the control device.

12. The control device of claim 1, wherein the program instructions that are executable by the at least one processor such that the control device is configured to cause the graphical interface to display the control interface comprising the one or more transport controls to control playback by the control device comprise program instructions that, when executed by at least one processor, cause the control device to cause the graphical interface to display a control interface that comprises the one or more transport controls in a particular arrangement on the graphical interface, and wherein modifying the one or more transport controls of the control interface to control playback by the particular playback device comprises causing the graphical interface to display the one or more transport controls to control playback by the particular playback device in the particular arrangement.

13. The control device of claim 1, wherein causing the one or more first cloud servers to transmit, to the particular playback device, the one or more first resource locators comprises causing the one or more first cloud servers to transmit, to the particular playback device, an identifier of the first media content, wherein the identifier indicates a particular source of the first media content at the one or more second cloud servers of the streaming content service, and wherein the particular playback device receives the first media content from the particular source at the one or more second cloud servers of the streaming content service.

14. The control device of claim 1, wherein causing the one or more first cloud servers to transmit, to the particular playback device, the one or more first resource locators comprises sending a message to the streaming content service that causes the one or more first cloud servers to transmit, to the particular playback device, the one or more first resource locators.

15. A non-transitory computer-readable medium, wherein the non-transitory computer-readable medium is provisioned with program instructions that, when executed by at least one processor, cause a control device to:
cause a graphical interface to display a control interface comprising one or more transport controls to control playback by the control device;
after connecting to a local area network via a network interface, determine that one or more playback devices are connected to the local area network;
cause the graphical interface to display a selectable option for transferring playback from the control device;
detect a first set of inputs to transfer playback from the control device to a particular playback device, wherein the first set of inputs comprises: (i) a selection of the selectable option for transferring playback from the control device and (ii) a selection of the particular playback device from the one or more playback devices that are connected to the local area network;
after detecting the first set of inputs to transfer playback from the control device to the particular playback device, cause playback to be transferred from the control device to the particular playback device, wherein transferring playback from the control device to the particular playback device comprises:
(a) causing one or more first cloud servers to transmit, to the particular playback device, one or more first resource locators maintained in a shared playback queue, the one or more first resource locators corresponding to respective locations of first media content at one or more second cloud servers of a streaming content service;
(b) causing playback at the control device to be stopped; and
(c) modifying the one or more transport controls of the control interface to control playback by the particular playback device;

cause the particular playback device to retrieve the first media content from the one or more second cloud servers of the streaming content service and play back the retrieved first media content;
detect a second set of inputs to transfer playback from the control device to a particular zone group of a media playback system that comprises a first zone and a second zone, wherein the first zone comprises the particular playback device and the second zone comprises at least one additional playback device, and wherein the second set of inputs comprises: (i) a selection of the selectable option for transferring playback from the control device and (ii) a selection of the particular zone group;
after detecting the second set of inputs to transfer playback from the control device to the particular zone group, cause playback to be transferred from the control device to the particular zone group, wherein transferring playback from the control device to the particular zone group comprises:
(a) causing the one or more first cloud servers to transmit, to the particular playback device, one or more second resource locators maintained in the shared playback queue, the one or more second resource locators corresponding to respective locations of second media content at the one or more second cloud servers of the streaming content service;
(b) causing playback at the control device to be stopped; and
(c) modifying the one or more transport controls of the control interface to control playback by the particular playback device and the at least one additional playback device in synchrony; and

cause the particular playback device to retrieve the second media content from the one or more second cloud servers of the streaming content service and play back the retrieved second media content in synchrony with the at least one additional playback device.

16. The non-transitory computer readable medium of claim 15, wherein causing the one or more first cloud servers to transmit, to the particular playback device, the one or more first resource locators comprises causing the one or more first cloud servers to transmit the one or more first resource locators for addition to a local playback queue on the particular playback device.

17. The non-transitory computer readable medium of claim 15, wherein the shared playback queue is stored by the one or more first cloud servers.

18. The non-transitory computer readable medium of claim 15, wherein the shared playback queue is not stored by the one or more first cloud servers.

19. The non-transitory computer readable medium of claim 15, where in the shared playback queue is not stored by the control device.

20. The non-transitory computer readable medium of claim 15, where in the shared playback queue is stored by neither the one or more first cloud servers nor the control device.

21. The non-transitory computer readable medium of claim 15, wherein the non-transitory computer-readable medium is also provisioned with program instructions that, when executed by at least one processor, cause the control device to:
receive an indication that playback of the first media content by the particular playback device has been modified; and
based on the indication that playback of the first media content by the particular playback device has been modified, update the graphical interface to reflect the modification.

22. The non-transitory computer readable medium of claim 21, wherein the indication that playback of the first media content by the particular playback device has been modified comprises an indication of a change in a playback position within the first media content.

23. The non-transitory computer readable medium of claim 21, wherein the program instructions that, when executed by at least one processor, cause the control device to receive the indication that playback of the first media content by the particular playback device has been modified comprises program instructions that, when executed by at least one processor, cause the control device to receive, from the one or more first cloud servers, the indication that playback of the first media content by the particular playback device has been modified.

24. The non-transitory computer readable medium of claim 15, wherein the non-transitory computer-readable medium is also provisioned with program instructions that, when executed by at least one processor, cause the control device to:
detect a third set of inputs of transfer playback from the particular playback device back to the control device, and wherein transferring playback from the particular device back to the control device comprises:
causing playback at the particular playback device to be stopped; and
modifying the one or more transport ctornols of the control interface to control playback by the control device.

25. The non-transitory computer readable medium of claim 15, wherein the program instructions that, when executed by at least one processor, cause the control device to cause the graphical interface to display the control interface comprising the one or more transport controls to control playback by the control device comprise program instructions that, when executed by at least one processor, cause the control device to cause the graphical interface to display a control interface that comprises the one or more transport controls in a particular arrangement on the graphical interface, and wherein modifying the one or more transport controls of the control interface to control playback by the particular playback device comprises causing the graphical interface to display the one or more transport controls to control playback by the particular playback device in the particular arrangement.

26. The non-transitory computer readable medium of claim 15, wherein causing the one or more first cloud servers to transmit, to the particular playback device, the one or more first resource locators comprises causing the one or more first cloud servers to transmit, to the particular playback device, an identifier of the first media content, wherein the identifier indicates a particular source of the first media content at the one or more second cloud servers of the streaming content service, and wherein the particular playback device receives the first media content from the particular source at the one or more second cloud servers of the streaming content service.

27. The non-transitory computer readable medium of claim 15, wherein causing the one or more first cloud servers to transmit, to the particular playback device, the one or more first resource locators comprises sending a message to the streaming content service that causes the one or more first cloud servers to transmit, to the particular playback device, the one or more first resource locators.

28. A system comprising:
one or more first cloud servers configured to communicate over at least one data network; and
a control device configured to communicate over at least one data network;

the control device comprising:
at least one first processor;
a first non-transitory computer-readable medium; and
program instructions stored on the first non-transitory computer-readable medium that are executable by the at least one first processor such that the control device is configured to to:
cause a graphical interface to display a control interface comprising one or more transport controls to control playback by the control device;
after connecting to a local area network via a network interface, determine that one or more playback devices are connected to the local area network;
cause the graphical interface to display a selectable option for transferring playback from the control device;
detect a first set of inputs to transfer playback from the control device to a particular playback device, wherein the first set of inputs comprises: (i) a selection of the selectable option for transferring playback from the control device and (ii) a selection of the particular playback device from the one or more playback devices that are connected to the local area network;
after detecting the first set of inputs to transfer playback from the control device to the particular playback device, cause playback to be transferred from the control device to the particular playback device, wherein transferring playback from the control device to the particular playback device comprises:
(a) causing the one or more first cloud servers to transmit, to the particular playback device, one or more first resource locators maintained in a shared playback queue, the one or more first resource locators corresponding to respective locations of first media content at one or more second cloud servers of a streaming content service;
(b) causing playback at the control device to be stopped; and
(c) modifying the one or more transport controls of the control interface to control playback by the particular playback device;

cause the particular playback device to retrieve the first media content from the one or more second cloud servers of the streaming content service and play back the retrieved first media content;
detect a second set of inputs to transfer playback from the control device to a particular zone group of a media playback system that comprises a first zone and a second zone, wherein the first zone comprises the particular playback device and the second zone comprises at least one additional playback device, and wherein the second set of inputs comprises: (i) a selection of the selectable option for transferring playback from the control device and (ii) a selection of the particular zone group;
after detecting the second set of inputs to transfer playback from the control device to the particular zone group, cause playback to be transferred from the control device to the particular zone group, wherein transferring playback from the control device to the particular zone group comprises:
(a) causing the one or more first cloud servers to transmit, to the particular playback device, one or more second resource locators maintained in the shared playback queue, the one or more second resource locators corresponding to respective locations of second media content at the one or more second cloud servers of the streaming content service;
(b) causing playback at the control device to be stopped; and
(c) modifying the one or more transport controls of the control interface to control playback by the particular playback device and the at least one additional playback device in synchrony; and

cause the particular playback device to retrieve the second media content from the one or more second cloud servers of the streaming content service and play back the retrieved second media content in synchrony with the at least one additional playback device; and

the one or more first cloud servers comprising:
at least one second processor;
at least one second non-transitory computer-readable medium; and
program instructions collectively stored on the at least one second non-transitory computer-readable medium that are executable by the at least one second processor such that the one or more first cloud servers are collectively configured to:
transmit, to the particular playback device, the one or more first resource locators maintained in the shared playback queue; and
transmit, to the particular playback device, the one or more second resource locators maintained in the shared playback queue.

29. The system of claim 28, wherein causing the one or more first cloud servers to transmit, to the particular playback device, the one or more first resource locators comprises causing the one or more first cloud servers to transmit the one or more first resource locators for addition to a local playback queue on the particular playback device.

30. The system of claim 28, wherein the shared playback queue is stored by the one or more first cloud servers.

31. The system of claim 28, wherein the shared playback queue is not stored by the one or more first cloud servers.

32. The system of claim 28, wherein the shared playback queue is not stored by the control device.

33. The system of claim 28, wherein the shared playback queue is stored by neither the one or more first cloud servers nor the control device.

34. A system comprising:
a particular playback device configured to communicate over at least one data network; and
a control device configured to communicate over at least one data network;

the control device comprising:
at least one first processor;
a first non-transitory computer-readable medium; and
program instructions stored on the first non-transitory computer-readable medium that are executable by the at least one first processor such that the control device is configured to:
cause a graphical interface to display a control interface comprising one or more transport controls to control playback by the control device;
after connecting to a local area network via a network interface, determine that one or more playback devices are connected to the local area network;
cause the graphical interface to display a selectable option for transferring playback from the control device;
detect a first set of inputs to transfer playback from the control device to the particular playback device, wherein the first set of inputs comprises: (i) a selection of the selectable option for transferring playback from the control device and (ii) a selection of the particular playback device from the one or more playback devices that are connected to the local area network;
after detecting the first set of inputs to transfer playback from the control device to the particular playback device, cause playback to be transferred from the control device to the particular playback device, wherein transferring playback from the control device to the particular playback device comprises:
(a) causing one or more first cloud servers to transmit, to the particular playback device, one or more first resource locators maintained in a shared playback queue, the one or more first resource locators corresponding to respective locations of first media content at one or more second cloud servers of a streaming content service;
(b) causing playback at the control device to be stopped; and
(c) modifying the one or more transport controls of the control interface to control playback by the particular playback device;

cause the particular playback device to retrieve the first media content from the one or more second cloud servers of the streaming content service and play back the retrieved first media content;
detect a second set of inputs to transfer playback from the control device to a particular zone group of a media playback system that comprises a first zone and a second zone, wherein the first zone comprises the particular playback device and the second zone comprises at least one additional playback device, and wherein the second set of inputs comprises: (i) a selection of the selectable option for transferring playback from the control device and (ii) a selection of the particular zone group;
after detecting the second set of inputs to transfer playback from the control device to the particular zone group, cause playback to be transferred from the control device to the particular zone group, wherein transferring playback from the control device to the particular zone group comprises:
(a) causing the one or more first cloud servers to transmit, to the particular playback device, one or more second resource locators maintained in the shared playback queue, the one or more second resource locators corresponding to respective locations of second media content at the one or more second cloud servers of the streaming content service;
(b) causing playback at the control device to be stopped; and
(c) modifying the one or more transport controls of the control interface to control playback by the particular playback device and the at least one additional playback device in synchrony; and

cause the particular playback device to retrieve the second media content from the one or more second cloud servers of the streaming content service and play back the retrieved second media content in synchrony with the at least one additional playback device; and


the particular playback device comprising:
at least one second processor;
a second non-transitory computer-readable medium; and
program instructions collectively stored on the second non-transitory computer-readable medium that are executable by the at least one second processor such that the particular playback device is configured to:
begin playback of the first media content; and
begin playback of the second media content in synchrony with the at least one additional playback device.

35. The system of claim 34, wherein causing the one or more first cloud servers to transmit, to the particular playback device, the one or more first resource locators comprises causing the one or more first cloud servers to transmit the one or more first resource locators for addition to a local playback queue on the particular playback device.

36. The system of claim 34, wherein the shared playback queue is stored by the one or more first cloud servers.

37. The system of claim 34, wherein the shared playback queue is not stored by the one or more first cloud servers.

38. The system of claim 34, wherein the shared playback queue is not stored by the control device.

39. The system of claim 34, wherein the shared playback queue is stored by neither the one or more first cloud servers nor the control device.