Overview of Control Panel

This section deals with the default settings after installation, and the recommended changes for proper operation of DVD and CD Playback.

Monitor Mixer

Uncheck mute in all Mixer Inputs. Check Stereo Gang.

Patchbay/Router

No changes required for Dolby Digital/DTS pass thru. 
For analog output, check Monitor Mixer on HW Out 1/2.

Hardware Settings

Uncheck Reset Rate When Idle.

S/PDIF

Check consumer for auto switching of Audio-CD/DVD.

Please note that after installation of the M-Audio driver, you must choose the Delta S/PDIF as the output device in Control Panel>Multimedia>Audio (Win98) or Control Panel>Sounds>Audio (WinME) before Windows will recognize the Delta as your digital sound source.

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