I have a 120 GB iTunes library that is really wearing down my iMac's hardrive. I have an external drive with about 110GB capacity. I want to move most of my music to it to relieve my computer. I want to be able to play that music through iTunes on my computer without copying to my hardrive. I've read some other posts that were sort of related to this but I really need some step by step info. Can somebody help me?