Garageband Export Aiff Won't Open In Audacity Or S Options

[deef]

Hi
I recorded a track in GarageBand and exported it. The resulting .aiff plays fine in iTunes. But there's a lot of noise and I wanted to run it through Audacity for noise reduction. (Before everyone jumps on me, yes, I know I should buy better mics, shielded cables etc. and eliminate the noise at the source...) When I opened the file in Audacity, Audacity crashed without any message. So I opened it in Sox, trying to convert .aiff to .wav . Sox gave the message "Failed reading (path/filename): AIFF: no sound data on input file" and quit.

Does GB use a proprietary AIFF format or something? It's a fun freebie toy but I'd really like to be able to do further work on the output files with other tools.

thx
DF