I have a Delta 2496 soundcard playing MP3s and DVDs thru the spdif output to my Denon receiver. The DVD sound from PowerDVD4 is MUCH lower than the other sound from the pc. It's a new Pioneer player in an external case which has a USB2-to-IDE converter in it. Could the USB translation be causing the low volume? I haven't found anywhere in the 2496 that I can separately adjust levels for the pc vs dvd.