HELLO , CAN SOMEONE TELL ME IF THEY HAVE ADDED ANY DVD UNITS TO THE LEVINSON SYSTEM IN A SC430 , I WANT TO WATCH MOVIES AND VIDEO MUSIC CONCERTS..I KNOW HOW TO USE A PAC MODULE TO BY PASS THE PARK AND MOVEMENT , BUT CAN I ADD A DVD PLAYER TO SYSTEM BY HOOKING UP AT NAVIGATION UNIT OR ATTACHINR TO RADIO WIRES.. THANKS JOHN