MEDIA PLAYBACK SYSTEMS WITH AUXILIARY AUDIOVISUAL INPUTS

Disclosed herein are computing devices, including playback devices, that are configured to operate in several media distribution modes and play back audio data in several playback modes based at least in part on the source of audio/video data for playback. IN one example, a playback device receives, via a first hardware interface, an input stream of audiovisual content comprising first audio data and video data. The playback device tags the first audio data and transmits the tagged audio data along with the video data to a video display device. The playback device then receives, via second hardware interface from the video display device, a second audio data stream. The second stream is evaluated to identify a tag, after which the playback device plays back the first audio data in substantial synchrony with the video data while suppressing playback of the second audio data.