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!"
Got a 5.0 downstairs based on some RCA bipoles for the roommates to enjoy, and a 5.1 rig back home for the parents with a Har Kar receiver driving three-way custom speaker cabs, plus a custom sub with two 18" woofers in push-pull configuration. Great for big group movie watching.
My personal rig is upstairs, for sound editing, but I watch a movie or two sometimes. PC-driven via M-Audio Delta 1010 plus corrective EQ on all channels, going to five Alesis ProLinear 720 studio monitors, two modded 12" Sony subs, and some room treatments. Flat response (+/- 2 dB) 30 Hz-20 kHz when measured at listening position. You haven't heard Master & Commander or The Fifth Element 'til you've heard it on a system like that!