What's the right way to do this? I want to clear up some room on my iMac internal drive, and some of the iLife applications create some large files. I know these are located in the Movies, Pictures and Music folders in my User Folder. Do I copy these entire folders to the external HD, or just the files inside them? And once I've moved the files, and told the various apps to look for them on the external, do I delete the folders in my User Folder? Thanks!