Grouping in a system with multiple media playback protocols

A non-transitory computer-readable medium, wherein the non-transitory computer-readable medium is provisioned with program instructions that, when executed by at least one processor, cause a first playback device to:

• join, via a first media playback protocol, a synchrony group for synchronous playback of media content, wherein the synchrony group comprises the first playback device and a second playback device, and wherein the second playback device is configured as a group coordinator of the synchrony group;
• transmit, via a second media playback protocol that is incompatible with the first media playback protocol, a discovery message to a media source device;
• receive, via the second media playback protocol and from the media source device, a playback control command;
• based on receiving the playback control command, cause the synchrony group to be updated such that the first playback device becomes configured as the group coordinator of the synchrony group instead of the second playback device;
• receive, via the second media playback protocol and from the media source device, a media stream for playback by the synchrony group;
• cause, via the first media playback protocol, the synchrony group to begin synchronous playback of the received media stream;
• receive, via the first media playback protocol and from the media source device, an indication of a playback command input at (i) the first playback device, (ii) the second playback device, or (iii) a control device configured to control the synchrony group;
• based on the received indication of the playback command, generate a converted playback command that is compatible with the second media playback protocol;
• and
• transmit the converted playback command to the media source device via the second media playback protocol and thereby cause the media source device to execute the converted playback command.

A method implemented by a first playback device, the method comprising:

• joining, via a first media playback protocol, a synchrony group for synchronous playback of media content, wherein the synchrony group comprises the first playback device and a second playback device, and wherein the second playback device is configured as a group coordinator of the synchrony group;
• transmitting, via a second media playback protocol that is incompatible with the first media playback protocol, a discovery message to a media source device;
• receiving, via the second media playback protocol and from the media source device, a playback control command;
• based on receiving the playback control command, causing the synchrony group to be updated such that the first playback device becomes configured as the group coordinator of the synchrony group instead of the second playback device;
• receiving, via the second media playback protocol and from the media source device, a media stream for playback by the synchrony group;
• causing, via the first media playback protocol, the synchrony group to begin synchronous playback of the received media stream;
• receiving, via the first media playback protocol and from the media source device, an indication of a playback command input at (i) the first playback device, (ii) the second playback device, or (iii) a control device configured to control the synchrony group;
• based on the received indication of the playback command, generating a converted playback command that is compatible with the second media playback protocol;
• and
• transmitting the converted playback command to the media source device via the second media playback protocol and thereby causing the media source device to execute the converted playback command.