I have had my iPhone 4 since it came out and always backed up to my home computer. Now that I am at school, I use a MBP which the iPhone has never been in contact with before. I just backed up my iPhone the the Mac iTunes but I am still not able to drag and drop music onto the iPhone from inside iTunes like I could on the old PC. I most likely no longer have access to that old PC and am afraid I will click something that will erase my settings and apps on the phone...which is why I did the backup. But I am still looking for direction so that I don't lose anything. There is no music on the iPhone, just some pics and apps, but I would like to drag and drop my music onto the phone so I can make some new ringtones... Thanks!