The guys over at ecoustics.com have reviewed the Sonos wireless mutliroom audio system
“Sonos miraculously simplifies whole-house audio. You don’t need to be a computer expert, you don’t need to be an electrician, you don’t need to know someone who is either, and you don’t even need to hire an installer. Plus you don’t need anything pre-wired. Sounds too good be true, doesn’t it? But the Sonos system was really that simple to setup and start using.