Hello, If I use iPhoto and have all my photos stored in there, do I have to keep a second copy in say "my documents" (or any folder for that matter)? The same goes with my music. If they are all in iTunes, why do I need them in "my music"? This may be a necessity and that's why I'm asking on here. Just seems like a lot of wasted disc space when I back everything up on an external hard drive? Thanks in advance!