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'm sure HD-DVD will have similar issues as newly released movies take advantage of new features in later revs of the technology. I'm sticking to my wax cylinders until they get it all sorted out.
You still don't get it? That's what the whole point is! HD DVD doesn't have these problems. It was PROPERLY thought out and spec-ed out so any 1st or 5th generation of player would play the same and future discs without problems. THE ONLY problems that HD DVD titles might have would be with combos and it's simply because it's a very fresh technology. And even with those, with every player having mandatory ethernet and online connectivity updating firmware becomes even less of a problem.