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!"
About the having to use the PC to manage your media...I totally agree with Ben. I use MythTV as my DVR and out of the three years I have had it I MAYBE have used the TV to schedule recordings 3 times. The web interface is SO much better/faster.
Ben, You were saying thats a problem with Vista MC connected to your TV. Does VistaMC not have a web interface?
Mitchell
Media Center has a third party app, but it kept causing me grief so I didn't use it, and it doesn't even work with the TV pack.