GearBits: Omnifi DMS1 Networked Music Streamer:

Not particularly useful to the likes of me, since I live in pretty much a single room, but I can see how you wealthy folk (who have more than one room you spend your life in) would like such a thing. For me, if I'm home, I'm in range of my iMac's speakers - if I'm not, I have the iPod. Easy, really.

But, if I ever move to somewhere bigger, I'll have to look at something like this....