We just got the M-Audio Audiophile 2496 and are having problems with simultaneous record and playback. It just ain't happenin'. We're using Cool Edit Pro and Magix. We had no problems like this with our previous sound card. We can't seem to get the full duplex in operation--we have to go into M-Audio's Moniter Mixer and switch the settings in order to hear what was just recorded and have to switch them back in order to hear in real time. But no matter what combination in the Moniter Mixer we choose, we can't fix the problem. We're using Windows 98SE. The documentation that comes with the card is skimpy. The card does sound great, though. Any help would be greatly appreciated!