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!"
I am quite stunned that this idea even made it this far. Are there really people that think this has ANY chance of succeeding?
It's too bad MovieBeam is not publicly listed. I'd short their stock.
Hopefully someone will figure out a good use for all those dead MovieBeam boxes next year when the service is discontinued.