vocalmind: My Xbox is hooked up to my stereo using the Monster Xbox cables, and the additional fiber optic monster for audio (not HDav Pack, and I don't think this counts as Advanced, but I am not familiar with those products, so I could be wrong). When using the normal xbox and DVDX ver 2, I was able to get DTS playback. Just to be certain, I will test it again tonight, but I have seen the DTS light on my receiver turn on showing it's getting a true DTS signal.