I got the little Songbird streaming device. It does what it's advertised to do. The app works well, sound is good. Spotify works.

I learned that Spotify cannot stream to two different sound systems simultaneously...... sonofabitch. I have to either pay extra for their couples plan, family plan or download a playlist and go "offline" to play the download while streaming to the second system. That's dumb. Seems like a simple "sync" players button wouldn't take too much effort.