| CPC H04L 67/10 (2013.01) [H04L 65/611 (2022.05); H04L 65/612 (2022.05); H04L 67/62 (2022.05)] | 19 Claims |

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1. In a media playback system comprising a first playback device and a second playback device, a method comprising:
at the first playback device, receiving, from a first audio source, first audio content for playback by the first playback device;
at the second playback device, while the first playback device is receiving the first audio content for playback by the first playback device, receiving from a second audio source, second audio content for playback by the second playback device;
forming a zone group comprising the first playback device and the second playback device, wherein while in the zone group, the first playback device is configured to forward the first audio content to the second playback device during synchronous playback of the first audio content by the zone group;
while in the zone group, receiving, at the second playback device, an indication that the second playback device is to receive the first audio content from the first playback device during synchronous playback of the first audio content by the zone group; and
in response to receiving the indication, configuring the second playback device to receive the first audio content from the first playback device during synchronous playback of the first audio content by the zone group.
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