System and method for synchronizing operations among a plurality of independently clocked digital data processing devices

An audio processing device comprising:

• a network interface configured to receive audio information from a network;
• a user interface module that includes a display configured to display a plurality of audio information sources available via the network;
• a control module configured to receive control input from the user interface module indicating a selection of one of the plurality of audio information sources;
• an audio information channelization device connected to the network interface configured (i) to receive a list of audio tracks to be played, (ii) to request the audio information from the selected one of the plurality of audio information sources according to the list, and (iii) to transmit the audio information in packet form via the network interface to two or more audio playback devices.

A tangible computer-readable memory having instructions stored thereon that when executed cause a device to:

• display a plurality of audio information sources available via a network;
• receive control input from a user interface module indicating a selection of one of the plurality of audio information sources and to receive a list indicating a list of audio tracks to be played;
• and,
• request the audio information according to the list, and to transmit the audio information in packet form via a network interface to two or more audio playback devices.

A method comprising:

• displaying a plurality of audio information sources available via a network;
• receiving control input from a user interface module indicating a selection of one of the plurality of audio information sources and to receive a list indicating a list of audio tracks to be played;
• and,
• requesting the audio information according to the list, and to transmit the audio information in packet form via a network interface to two or more audio playback devices.