Audacity Forum

I just installed a new Fast Track Pro, and I am seeing the same thing. I'm guessing the driver from M-Audio has somehow disabled this. I can select the "Fast Track Pro In 1/2" using "Edit -> Preferences -> Audio I/O", as suggested above; and that seems to work with a microphone plugged into the Fast...

If by "editing features" you mean choices under the "Generate" and "Effects" menu, these have to be applied to a (highlighted) "selection" of the song. You can select part of the song by clicking and dragging the mouse over the portion desired. If you want the effects to apply to the whole song, jus...