One that you won't like; buy a new interface(and avoid anything with the M-Audio branding). Its a bit cheeky to use the word "Pro" with the Fast Track as it is a box built to a price point, and not for much quality(and the drivers have always been spotty, at best). Currently, the best "budget" interfaces seem to be Focusrite and Presonus. Moving up in quality, RME are consistently top-notch(both the hardware and the drivers)