Sonos has announced a new set of devices that work together over ethernet to provide digital music to any room in your house (well, every room with the player device) all controllable from a nifty looking LCD remote control. In addition to the controller, you buy the player device that has a built in 50W amp and discrete RCA outputs. You put a player in every room you want music and the controller can control them all at once. They all access the digital music stored on your Macs and PCs on your network. Nifty. Kinda expensive, though.