Originally posted by cathjock
both itunes and iphoto duplicate the files that you add to the play list (library) and put them into their own folder
try this if you don't believe me: download a song and place the file onto the desktop. open itunes. drag the song that you just downloaded into the itunes library. it will say "duplicating (file name)", and it will add the duplicate to your specified music folder. after this process is done, your original song file will still be on the desktop, and a duplicate will be in your music folder. to prove that it is really a duplicate and not just a shortcut, delete the song file on your desktop. then go back to itunes and play the song or look in your music folder for the duplicate.