PowerDVD enables various features in the M-Audio Delta series sound cards that are not available in other software DVD players, such as support for 24/96 DAD audio or DD/DTS 6-channel decode.  Following is a list of supported audio formats and applicable versions.

Open PowerDVD and stop any discs that may try to play from the DVD-ROM drive.   Right click on the PowerDVD screen, and choose "Configuration".   Click the "Audio" tab.

Audio Formats:

DVD-Video - Dolby Digital and DTS DVD pass-through, set to S/PDIF output.  V3.0 and XP 4.0

24/96 Audio CD - 2-channel 24/96 playback, set to WaveOut V3.0

DVD-Audio DD5.1 - Pass-through via S/PDIF and Toslink 48kHz, set to S/PDIF out. V3.0 and XP 4.0

DVD-Audio 6-Channel DD/DTS Decode - For Delta 410 8-channel analog 48kHz, set to 6 Speakers out/Dolby Digital or DTS decode.

Dolby ProLogic II 6-Channel Decode -   For Delta 410 8-channel analog, set to 6 Speakers out and choose ProLogic for Movies or Music.

DVD-Audio 6-Channel DD/DTS Decode 24/96 MLP- Not yet supported

 

Troubleshooting
Latest Drivers and info for Delta Series sound cards
M-Audio Control Panel Setup
Windows .WAV file playback
Enabling CD Playback without internal cables
Enabling S/PDIF output in PowerDVD
Stuttering with VIA Chipset based Athlon Machines