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!"
"They could make it $1 and i still woundn't buy one."
Sir, you are an idiot. For a Dollar you wouldn't buy a add-on that cost a company 120 dollars or so to make? That's like giving money away to consumers. I would buy 20 if they were $1.