on my hard drive. i have really only downloaded music. on iTunes it says 7.9 then on my mac somewhere around 14. then i realized i had double flies of my music. i didn't know i didn't have to also save on desktop. so just drag to iTunes and it save it? but on space for my hard drive...OTHER it says some 28.9 gigs. where is this from. i have download only a few apps and there have a space to show for apps. I'm just a little confused if someone could help explain. thanks very much