A coordination device, comprising: one or more nodes configured to communicatively couple to one or more antennas; an interface circuit communicatively coupled to the one or more nodes, wherein the coordination device is configured to: receive, from the one or more nodes, input frames associated with electronic devices; store receive times when the input frames were received, wherein the receive times are based on a clock in the coordination device and are determined in a physical layer associated with the interface circuit of the coordination device; calculate current time offsets between clocks in the electronic devices and the clock in the coordination device based on the receive times and expected transmit times of the input frames, wherein the expected transmit times correspond to a predefined transmit schedule of the input frames, the clocks in the electronic devices and the clock in the coordination device having been coordinated at a previous time; and transmit, via the one or more nodes, one or more output frames that comprise audio content and playback timing information intended for the electronic devices, wherein the playback timing information specifies playback times when the electronic devices are to playback the audio content based on the current time offsets, wherein the playback times of the electronic devices have a temporal relationship so that the playback of the audio content by the electronic devices is coordinated, and wherein the coordination device is configured to receive the input frames and to transmit the one or more output frames using wireless communication. one or more nodes configured to communicatively couple to one or more antennas; an interface circuit communicatively coupled to the one or more nodes, wherein the coordination device is configured to: receive, from the one or more nodes, input frames associated with electronic devices; store receive times when the input frames were received, wherein the receive times are based on a clock in the coordination device and are determined in a physical layer associated with the interface circuit of the coordination device; calculate current time offsets between clocks in the electronic devices and the clock in the coordination device based on the receive times and expected transmit times of the input frames, wherein the expected transmit times correspond to a predefined transmit schedule of the input frames, the clocks in the electronic devices and the clock in the coordination device having been coordinated at a previous time; and transmit, via the one or more nodes, one or more output frames that comprise audio content and playback timing information intended for the electronic devices, wherein the playback timing information specifies playback times when the electronic devices are to playback the audio content based on the current time offsets, wherein the playback times of the electronic devices have a temporal relationship so that the playback of the audio content by the electronic devices is coordinated, and wherein the coordination device is configured to receive the input frames and to transmit the one or more output frames using wireless communication. receive, from the one or more nodes, input frames associated with electronic devices; store receive times when the input frames were received, wherein the receive times are based on a clock in the coordination device and are determined in a physical layer associated with the interface circuit of the coordination device; calculate current time offsets between clocks in the electronic devices and the clock in the coordination device based on the receive times and expected transmit times of the input frames, wherein the expected transmit times correspond to a predefined transmit schedule of the input frames, the clocks in the electronic devices and the clock in the coordination device having been coordinated at a previous time; and transmit, via the one or more nodes, one or more output frames that comprise audio content and playback timing information intended for the electronic devices, wherein the playback timing information specifies playback times when the electronic devices are to playback the audio content based on the current time offsets, wherein the playback times of the electronic devices have a temporal relationship so that the playback of the audio content by the electronic devices is coordinated, and wherein the coordination device is configured to receive the input frames and to transmit the one or more output frames using wireless communication.