Are you talking about your earphones when you say "input my speakers"? If so, have you tried testing another pair of earphones to make sure the problem is not the earphones? Do the songs play fine when you play them without the earphones (using the iPhone speaker at the bottom of your phone)? Is the problem with every song you play? If you rule out everything else but the iPhone as being the issue then you may want to visit an Apple store (if available) or a VZW store so they can check the device. You might also want to try taking your music off of the iPhone and then re-syncing them back to the phone to see if that does anything. I would guess that the problem is with the earphones or whatever speakers you may be plugging in. Also...this may seem like an obvious thing but check to make sure that the cable is inserted fully into the iPhone.