Let's say the HDD on my Laptop fails, or I have to reinstall the OS and I lose everything for some reason. [Knock on wood] After reinstalling iTunes, if I plug my iPhone back in would my iPhone basically act as a backup for all my pictures, movies, tv shows, songs, etc.?? Also, for purchased TV shows, songs, etc. what happens if I lose those files due to data loss? Can I re-download for free or what? Thanks for your time.