Check your itunes preferences, go to advanced and check that your itunes media folder location is the same as where your music now is on your hardrive, that should fix it.
@Mrlemon started
London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
This site is supported almost exclusively by donations. Please consider donating a small amount regularly.
Check your itunes preferences, go to advanced and check that your itunes media folder location is the same as where your music now is on your hardrive, that should fix it.