Once you are in the Advanced Preferences window, you should see the current iTunes Media folder location and be able to change the location by clicking on “Change” and selecting the new location.
Normally, you should be able to change the default location of the iTunes Media folder by launching iTunes and then going to: Macintosh HD | Users | | Music | iTunes | iTunes Media Apple iTunes defaultly stores iTunes media on your Mac or Windows PC in the following storage locations:
