What is the best way to back up my iTunes library to DVD? Do I have to highlight/select the artist-labeled folders within the iTunes folder in the Music folder and the drag them to the "Untitled DVD" icon on my desktop or is there a better/faster way to do it? I've got about 13GB of music so it won't all fit onto one disc--will iTunes split the library automatically when the DVD is full or is that something else I'll have to do?