I think it's because it's DTS-HD MA 5.1 24/96, which PowerDVD can't downsample properly :rolleyes: I haven't tested any discs with that particular audio format, no. of channels and bit depth/sample rate, so it seems to be a bug with PowerDVD8. Celine Dion which was the same no. of channels/bit depth/sample rate but Dolby TrueHD had no such problems.
Anyone else with this problem? I'm using X-Fi Titanium 7.1 analog to Gigaworks S750 7.1.