I'm sorry if this is a stupid question, but I have searched the forums and haven't found the answer - maybe I just can't see it! I have recently switched from PC to Mac and copied my mp3s over from the PC to the 'Music' folder in finder. Then I added the music into iTunes using the 'add folder' option and it copied all the mp3s into the Music iTunes folder. Does this mean I now have two copies of the music? Should I import it into iTunes directly from the PC rather than copying it from PC to Mac first?