We bought two ZP90s for a couple of zones in a whole-house audio system.
We had been using an Apple AirPort Express for a few years to play our iTunes-managed stuff (which is probably 90+% ripped from CDs), and a connection from our cable box to our stereo to play music stations supplied by our cable company. All of this played in our living room and at the patio.
When we decided to expand to our kitchen and dining room areas, we did quite a bit of research, and decided the ZonePlayer would be a good choice. Because most all of our iTunes songs are not DRM-protected, we can listen to them on the Sonos (though it is a pain not to be able to play most of the Apple-purchased songs with the ZonePlayers). We’ve been using the Sirius internet trial, and will probably subscribe (not as much money as it might be, as we already have a subscription for the car). Also, it’s pretty cool to be able to listen to radio stations in Honolulu or Melbourne, Australia on occasion (we probably wouldn’t have found these without the Sonos). We’ve had very few problems with continuous streaming of Sirius or the radio stations over the Internet to our Sonos boxes; I think I’ve noticed just one time (over a few weeks) where it cut out, and then only for a few seconds.
We’ve used both the computer-based controller software as well as the version that works on an iPod touch. Both seem to be pretty stable, and are quite intuitive to use. We’ve used the alarm clock function (not accessible with the iPod-based software), and it works fine, though it is not terribly sophisticated (our schedule has a regular pattern, but doesn’t quite match the Mon-Fri, etc. options that they give you).
