Pull the cable off from the 3.5mm headphone jack. You may use heat-gun to make it warm. Be careful not to make it too hot. Keep focusing to make the base of the jack warmer not the divided end or the nose of the jack.
If you headphone cable and wires are already pulled off, warm up longer to the base of the jack and then using pointer pliers, try to pull off gently without tearing the cable/wire support rubber stuff apart. This is the thing that enhances the look and support of the cable to the iBeats metal exterior for 3.5mm jack.