Patent ID: 7143102

Claim:
A method comprising: receiving, via a user interface of a portable audio playback device, user input selections related to one or more audio file query parameters; generating an audio file search query based on the user input selections; storing the audio file search query at the portable audio playback device; automatically generating, at the portable audio playback device, a first playlist of audio files selected from a database of audio files based on the audio file search query; adding a first audio file to the database of audio files subsequent to generating the first playlist; automatically generating, at the portable audio playback device, a second playlist of audio files subsequent to adding the first audio file, wherein the second playlist of audio files is selected from the database of audio files based on the audio file search query, wherein the second playlist of audio files identifies a subset of the database of audio files, wherein the second playlist of audio files includes the first audio file, and wherein the second playlist of audio files is modified with respect to the first playlist of audio files; removing a second audio file from the database of audio files subsequent to generating the second playlist; automatically generating, at the portable audio playback device, a third playlist of audio files subsequent to removing the second audio file, wherein the third playlist of audio files is selected from the database of audio files based on the audio file search query, wherein the third playlist of audio files identifies a subset of the database of audio files, wherein the third playlist of audio files does not include the second audio file, wherein the third playlist of audio files is automatically generated subsequent to the second playlist of audio files, wherein the third playlist of audio files includes the first audio file, and wherein the third playlist of audio files is modified with respect to the second playlist of audio files; and providing a representation of at least one of the second playlist or the third playlist for navigation by a user of the portable audio playback device.