Got the M Audio Dio 24/96 in there and wow is DVD playerback sounding miles better than with my £30 Fortissimo sound card ! Anyhow, one issue is that MP3 playback using Winamp isn't going to the S/PDIF output. Analogue wave phono L+R, yes. But not to the S/PDIF where I want it. I've played in vein with the settings for the M Audio card. Rounting and that. Any suggestions?