Was thinking about doing this. Sonos would be nice, but it costs a lot, and I'm not sure how much money I have in my budget to set this up. Then I was thinking about Airport Express and Airplay enabled speakers. But you need one Express for each speaker.
I crowdfunded this shit and a mini subwoofer for like $650 total. Toronto startup company, gonna check em out a demo of it soon when they're back in town, they've got a lot of attention at CES among other places.
Cheers for the input. Gonna go with the Sonos Play:1. Get two of those first. Hook em up to the internet and I can play music on them from my phone, iPad, computer, etc.! Just have to dl their app. No need to hook up any wires...