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!"
Actually, AVerMedia had released 3 corresponding beta VMC QAM plug-ins for their AVerTV Hybrid Volar MAX, AVerTV Bravo Hybrid PCI-E, and even the popular AVerTV Combo PCI-E early this year. Their PM released them on "The Green Button" forum. Every AVerMedia users can download them from the following route.
ftp://beta:betatest@ftp.aver.com