I'm trying to record music on my computer (a Gateway laptop) using the program N-track Studio (version 3.3 if that matters). Every time that I start the program up, though, I get an error message saying that the sound card is already in use, although nothing is playing through the speakers, and I can play music through other programs just fine. Also, the icon to change volume doesn't appear on the windows system tray, if that has any bearing on this. Any help would be appreciated!