It defaults to putting stuff in "C:\Documents and Settings\aharrison\My Documents\My Music". Unfortunately work is backing up My Documents to the SAN and we are limited to 4Gb or so. I have over 40Gb of music in My Music so this won't work.
I moved My Music to C:\My Music and I've been trying to get iTunes to use that dir with no luck. I specify to use the new dir in the config, I've told it where the library file is. I've re-imported all my music from the new location. Every time I restart iTunes it comes up empty.
I can't believe iTunes is this retarded, given the number of people that use usb drives for their music, there must be some way to get iTunes to reliably use a different path for it's folders.