How to move your iTunes library to an external drive
Many of us have enormous iTune media libraries that simply become too large to reasonably store on your Mac’s main hard disk, so an obvious solution is to move your digital library to an external drive. The popular techblog Lifehacker has an excellent how-to up directing users painlessly through the process of relocating their iTunes media library to an external drive so you can save precious disk space. Remember to backup your data first, in the odd event something goes wrong. Here’s the LifeHacker Guide or you can check out our own guide to move the iTunes library which works for external drives or other locations.

my computer has a varis and hased to be clean so I lose everthing and have things redo my computer and i lose the itune download and movies,