Over the course of 18 months I used GarageBand to record between 100 and 200 meetings for a project I did with a client. With the project over I have 140GB of files eating up precious space on my HDD. I want to convert all these GarageBand Project files into mp3 files. I know I can do this through GarageBand on a file-by-file basis but that's going to take forever. Is there a bulk converter out there where I can just queue these all up and let the app chew away at them?