It is a slow and tedious process, but one that I think will be worth it. I’ve got over 60 cassette tapes I need to digitize on my computer. Once the tracks have been recorded to my laptop, I’m able to re-mix them and clean them up a bit. With this gear, I’m able to record all 4 tracks simultaneously from the 4-track cassette recorder, through my M-Audio device, and into my Powerbook G4. I recently got a good deal on a refurbished M-Audio Omnistudio USB and was also able to borrow an old 4-track cassette recorder.