If you're like me, you're just trying to get to know how file storage works. We started by trying to save all of the audio from this project to one laptop. Which promptly crashed. Then, we bought a two gig jump drive.
Well, here's the kicker. Audacity never saves in mp3 format, only in their own format. Which I thought wouldn't be a big deal. It was, and I had to convert every single file from their own format to mp3. If you search around enough, you'll find a tool online to help you convert them. Just take a general warning, this will take time. Don't forget to label the mp3 files with a different name than the original file, so your computer doesn't freak out on you and say that you already have a file by that name.
About three quarters of the way into the book, we had to go buy a 4 gig jump drive and save everything there. We still saved copies onto cd's (which Joel's computer ultimately couldn't read), and on the hard drive, but that was what we ended up providing to him.