I have a lot of content in iTunes, but it is under 32 GB. I have a 32 GB external hard drive. I have never backed up my iTunes content before, and I am getting rid of this computer for a new one. I want to put all my old content on my new computer and have it look just the same on my new computer without any glitches, missing cover art, out of place movies, or anything else. I then want to be able to continue to purchase new movies and music on the new computer and have it work just fine with my old content. What exactly do I need to do?