so my Itunes keeps opening on it's own. I think I changed a preference somewhere, but I can't figure out where, and I need to make it stop. it will open even after I have completely closed down the program, and it checks the Itunes store. I have no idea where the preference is, can someone help me out? it keeps opening over my other programs, and I can't leave it off, it turns itself back on! I don't want to have to delete the program and re-download it!