A friend asked me to help him clean up his iTunes library on his iMac the other night so I asked him to bring it by. When he did I realized what had happened which is he had moved the location of his iTunes folder from his computer to an external drive. After moving the folder he imported all of his music again which caused iTunes to think his 8,000 MP3’s had become 16,000 MP3’s. Half of the tracks had red exclamation points by them because iTunes had information about them but could no longer locate the file since he had moved all of the music to a new folder in a different location. I found an easy solution to resolve this problem on a Mac which I describe in detail below.