I have an HD radio tuner connected to a Sonos Five, and set to auto play, so I can use without ever going to the Sonos App. I also play this source to speakers in another room. The speakers in the other room remember last played source, so I can simply play radio by touching play button on speaker in other room. However, if I play an airplay source in between, the speaker forgets the airplay source after it ends (as it should). But it does not revert back to the previous played source (line-in source), unlike it does if I had played any other network source (eg, Amazon music radio station) within the Sonos App before playing from airplay. My question: is there a setting to make a line-in source to have the same “last-played” behavior as other network sources played from the Sonos app? If not, I would ask Sonos to include this feature in the next update.