I have recently developed a problem with losing audio while playing dvd's. I have a Kenwood 6060 and a Sony 530 dvd player. When a movie is playing, (DD or DTS), the sound mode changes to analogue and there is no sound. I've tried turning the receiver and dvd player off and on, but that doesn't seem to help. Is my dvd player going bad, does its lense need a cleaning, or is it the digital audio outputs on my receiver the problem? This has happened with several different dvds, so it is not a scratch problem. This has really been puzzling me. Any input is greatly appreciated.