I just got an ipod touch 16gb for christmas. I previously had a iPod nano. For my new iPod touch I added about thirty percent more songs than I had on my nano. For some reason it is only playing the songs that I already had checked for my nano. When I try to play a song that wasn't on my nano, it plays about 5 seconds of silence, and then advances to the next song. It plays all of the songs I had on my nano perfectly though. Has anyone else had this problem, or know how to solve it?