Synchronized audio mixing

Tangible, non-transitory computer-readable media comprising instructions stored therein, wherein the instructions, when executed, cause a first playback device to perform functions comprising:

• receiving a first stream of packets comprising first audio data from a first audio source;
• while receiving the first stream of packets comprising the first audio data, receiving (i) a second stream of packets comprising second audio data from a second playback device, wherein the second audio data is different than the first audio data, and (ii) playback timing for the second audio data;
• while receiving the first stream of packets comprising the first audio data and the second stream of packets comprising the second audio data from the second playback device, generating a mixed audio signal comprising (i) a first audio signal component based on portions of the first audio data and (ii) a second audio signal component based on portions of the second audio data;
• and
• playing the mixed audio signal comprising the first audio signal component and the second audio signal component, wherein playing the mixed audio signal comprises (i) using playback timing for the first audio data to play the first audio signal component and (ii) using the playback timing for the second audio data from the second playback device to play the second audio signal component of the mixed audio signal in synchrony with at least the second playback device, wherein the playback timing for the first audio data is different than the playback timing for the second audio data.

A method performed by a first playback device, wherein the method comprises:

• receiving a first stream of packets comprising first audio data from a first audio source;
• while receiving the first stream of packets comprising the first audio data, receiving (i) a second stream of packets comprising second audio data from a second playback device, wherein the second audio data is different than the first audio data, and (ii) playback timing for the second audio data;
• while receiving the first stream of packets comprising the first audio data and the second stream of packets comprising the second audio data from the second playback device, generating a mixed audio signal comprising (i) a first audio signal component based on portions of the first audio data and (ii) a second audio signal component based on portions of the second audio data;
• and
• playing the mixed audio signal comprising the first audio signal component and the second audio signal component, wherein playing the mixed audio signal comprises (i) using playback timing for the first audio data to play the first audio signal component and (ii) using the playback timing for the second audio data from the second playback device to play the second audio signal component of the mixed audio signal in synchrony with at least the second playback device, wherein the playback timing for the first audio data is different than the playback timing for the second audio data.