Let the hive mind of Engadget get that for you.
"I am looking for a device that will stream sound from one source to several recipients. For example, I want to stream sound from my TV or stereo to my phone or MP3 player that has radio and Bluetooth capabilities. I have looked into radio transmitters and they seem like a decent choice, but I can't find one that uses external power (USB or from the plug) and I would want one with a transmit range of around 50 meters. Thanks!"
The source for this story (iTWire) has already been debunked. Sorry buys but I trust my sources @ Xbox-Scene better then here when it comes to any Xbox related news:
http://forums.xbox-scene.com/index.php?showtopic=527319
http://gamerscoreblog.com/team/archive/2006/06/30/536031.aspx