Hmmm, I hadn't tried it until you asked (heh heh) ... but it turns out to be easy, despite the lack of clarity of the Help system on the issue. In the CD Audio page of the Options dialog box, there's a checkbox labeled Digital playback. If this is enabled and the hardware supports it, it uses that. I have my Delta set as the default WAV playback device, and when I check this option, Media Player 7 plays the CD audio disc through the Delta rather than through the Sound Blaster.