Ok, so I went from a 500GB 13" MBP to a 128GB MBA. No biggie since I'm using Rdio and Google Music for my cloud music entertainment, my movies and photos are on an external hard drive and that's pretty much it for the media. But again, the storage is showing 15GB of music even though iTunes is empty, as well as 2.5 and 5.5GB of photos and movies. I don't have a single photograph or movie of my own on this machine and it is still showing me this. What gives?