I'm having real problems with an m-audio 2496 card with win 7. I get crackling on the left hand channel with higher sample rates ie higher than 44.1 khz. After 4 months of struggle with this i have come to the conclusion that it is a driver problem. M-audio are very slow in comming up with a fix for this specificaly win 7 drivers. This is a common problem with this card, if you look on the m-audio forum it's packed with posts with win 7/2496 problems. Any way can anyone recommend a cheap card that works with win 7, 24/96 output and has an optical out,cheers.