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!"
In the meantime I'm enjoying the awesome new, digitally remastered Airwolf soundtrack that they've just released called 'Airwolf Themes' which you can download off Apple iTunes Store, or from their official website where there are great teaser samples, http://www.airwolfthemes.com/ I think Hulu's Airwolf pheneomenon is just the tip of the iceberg and really just setting us all up for an Airwolf revival movie too.