I have the Sigma Hollywood plus card.
When I play a DVD from the hard drive, by way of the VIDEO_TS.IFO file, I get no audio. If I just play the VOB I get sound. I am using the analogue output.
Have tried some registry settings, Like EnableDac, EnableMultichannelwave, no luck.
I some times get the sound, I used DVDshrink to create dvd files on the HDD and I got sound. I was thinking that there maybe a pecking order for the sound codecs/devices.

Any help would be appreciated.