Wireless Speakers? Do they make such thing?

My buddy lives in San Diego and was aksing me if there is any wireless/bluetooth surround sound speakers? He is currently renting and have a small living room for his system. He is limited on space and really doesn't want to run wires under the carpets since he doesn't know how long he will be staying at this apartment. I don't know of any wireless speakers and I don't know how well they would perform as well. Your help would be greatly appreciated.