Hi, recently I sold my desktop PC and I forgot to back up music folders I saved in Itune and local disk. So I have this iPhone 4 with music but I want to save these music to iTunes music folders. I remember that when I sync with my new laptop(which has no music at all) it just erases all music in iPhone. So I really do not want them to be erased accidentally. So how can I transfer iPhone 4 music and files to my iTunes without losing anything? or to local disk as well? Thanks in advance!