hi, i have a problem, ok i like to have all my music, with cover art and lyrics and all spelled properly and have all the track numbers. but sincei have all my music in a external drive, im just worried that having it plugged into my macbook and organizing my music right from the drive, might cause it to eventually die. so what i have been doing is copying a few gigs of music at a time to my mac, then organizing it then re copying it to my external drive and over-writting the old music files, but i noticed that all the cover art for those gigs of music are gone. why is that? thanks.