The Connect:Amp and the outdoor speakers will play all music sources except line-in.
The Play:1 speakers with play all music sources including Connect:amp line-in.
Obviously line-in works, because I can get sound from it through the Play:1 speakers.
Why can't I get the Connect:Amp speakers to play the Connect:Amp line-in. They play other sources.
Best answer by Dave Sl
I turned it off, turned it back on. All of it works.