Microsoft has changed its audio architecture drastically since the Fast Track’s heyday. The native Windows USB Audio 2.0 driver often conflicts with M-Audio’s proprietary driver.
For standard Fast Track Pro owners, there is no solution beyond dual-booting an older OS. m-audio fast track driver
Once installed, you will see two options inside your Digital Audio Workstation (Cubase, Ableton, FL Studio). m-audio fast track driver