iTunes Artist to Composer 1.0 Description:
Batch move Artist field to Composer field. iTunes Artist to Composer is an AppleScript that copies the selected tracks' old Artist tag to the new Composer tag, and sets the Artist tag to a new single artist of your choice (descended from AppleScripts by Apple).
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Trying to locate and remove duplicate files on your system can be a real pain. (Freeware)
Free rip and convert DVD to iTunes formats on Mac OS X Tiger/Leopard/Snow Leopar (Freeware)