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 agree, I think this is a smoke screen that MS through out there so it could take the attention of f of the PS3. I don't believe MS is being honest with this one and think it would be really stupid for an XBox owner to buy this piece of hardware as it very likely does not do what MS "says" it will do.
At least, the PS3 cures cancer and will end global warming (wait, the latter will be made by pastafarian pirates).
To be honest, 1080p is a way overhyped feature. It's useless for movies, because a good 1080p display will deinterlace properly the 1080i signal and the displayed image will be exactly what it would have been with a 1080p connection. Games is another business, but I don't see many games running natively in 1080p/60 on either platform anyway.
And come on, 720p is already absolutely stunning. If your screen isn't multiplex-theater sized, most people wouldn't see the difference...