I've noticed now the new Beta has the WMV 5.1 option. I've tried it and it sort of works, but sounds like crap. The channels are all jumbled. The vocals are coming through the left front instead of the middle. This DVD is DTS. Could that be the problem? The generic.xvid.avi.audiocopy still won't play on my XBox and I have downloaded the codec software on the console. Any ideas?