Hi,
I bought a Rocket Fish wirless rear speaker system at best Buy and it works great. You might want to consider one. Your front speakers will be wired but you wount have wires running across your room to the rear speakers. I have no signal loss or sound delay at all. Works like a champ. That is if you already have a home theater system. If you're looking for a complete Home theater in a box, just google wireless HTIB systems. There are plenty of them out there.
Hope that helps.
Here is a link for the Rocketfish.
http://www.bestbuy.com/site/olspage....=1171058476489