I understand the purpose of the iTunes local backup of apps is incase the app is deleted from the App Store it can still be reloaded on the phone. I really only care about this function for purchased apps, which at this point I have none. It's also taking up several gigs on my drive... I am also using iCloud and Photo Stream to sync my pictures and data. I really only want to use iTunes sync to manage my music. How to I correctly setup iTunes, iCloud and iPhone to operate in this manner? Thanks!