1. A method comprising: storing, via a playback device, an association between a playback queue and a first application identifier, wherein the playback queue comprises one or more media items; after storing the association between the playback queue and the first application identifier, receiving, via the playback device from a first computing device, a first message comprising a second application identifier; determining, via the playback device, that the second application identifier corresponds to the first application identifier; and responsive to determining that the second application identifier corresponds to the first application identifier, transmitting, via the playback device to the first computing device, a queue identifier associated with the playback queue.