Not sure if its IOS5 related but since this is a new issue i'm guessing it is. Previously Iphone 4 4.2.1 no music problems. All of a sudden today i cant get music synced with my iphone 4 5.0. Its just completed a synch and not one song worked. So i'm trying again now. I have no idea what to try as none of my settings have changed, everything looks fine.