I'm doing one to two hour interviews on cassette tape (I don't like the sound of digital recorders) and need to get them into the MP3 format. I understand I can use garageband to upload the audio and then transfer into iTunes for MP3 conversion. Is this a good pathway? Will it work? Will I overload the software or the computer (emac G4) by converting so much analog audio? Maybe there's another way, but it doesn't appear to me that any of the software, such as Express Script, can do it. Thanks much for any help.