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!"
Prey521, stop referring to people as 'bots'. You don't seem to care about Hidef and you probably don't buy a lot of HD DVD movies. Are you an Xbox 360 owner? If you are then your reply makes a lot of sense. If you are not a 360 owner then I warn you not to buy one. They have a hardware problem called RROD and the HD DVD add-on has given a lot of X360 owners headaches.