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!"
It seems as though you only have a 480p TV, how are you testing out a HD-DVD player with a NON-HDTV and why would you be setting the output to 1080i if you only have a 480p TV? Hopefully I am missing something.