The Sonos Player/System is a very easy and modular system to set up. I just set one up in my own home and it was very straight forward to set up. You just plug in one of the components such as the zone 90 bridge to your router/network. Install the included software and connect one or more ZonePlayers.
Having different zones is the name of the Sonos game. I have the ZonePlayer S5 in the living room and one in the master bedroom. The S5 is also very portable, it can just be unplugged and placed outside on the deck for instance. I also connected a ZonePlayer Z90 to my home theater system in the Man Cave to play music from the centralized iTunes library. The Z90 may be put into serve to connect to a pair of powered outdoor speakers if I can find some that I like.
The Internet Radio stations that are available on the Sonos system are extensive. Several of my favorite stations are available so you can listen to local stations or international stations as well. You also have the option to add stations to a Favorites list for fast access to those stations.
If you have an iPhone or iPod TouchThere is a free app that connects to your Sono System which enables you to control the Sonos system. If not you will need to purchase the Sonos controller which is a bit pricey. If you don’t have an iPod Touch I would purchase one to control the Sonos because it can so so much more than the Sonos remote solution.
There is an iPad app in development that Sonos has already previewed and it looks to be a very nice way to touch and control your Sonos system.
I will be using and listening to more music and experimenting with multiple iTunes libraries and I will post those impressions at a latter date.