I believe you can also do it the other way around. First tell iTunes where you want your music folder to be, then Consolidate Library... in the Advanced menu should shift the mp3's automatically, along with any other stragglers littered around your volumes.
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<a href="http://forums.appleinsider.com/cgi-bin/ultimatebb.cgi?ubb=get_topic&f=8&t=000585" target="_blank">moved thread</a>
[ 02-05-2003: Message edited by: murbot ]</p>