ok so im kind of nervous. just transferred 85gb itunes library from external HDD to new imac. for a few hours everything is fine. then i randomly go to one of my favorite albums and several of the songs cannot be located, they are missing. i have deleted the library and am recopying from the hdd. is there a script that can detect whats on the song list library but not in the itunes media folder? i have no idea how this could happen if the transfer showed no errors.