Or just dump the cassettes' output to the Audio In of your Mac into
Garageband.
David! It worked perfectly! All I had to do was take an RCA to
minijack adapter, plug the RCA end into the back of the cassette deck,
plug the minijack into my Mac Pro's Audio In, and create a "New Audio
Recording" in QuickTime Pro. Voila! And the resulting file sounds
surprisingly good. I'm thrilled!
Thanks for your help, and to everyone else who chimed in. I really
appreciate it!
-Fleemo