I am experiencing an audio problems when I watch Netflix on my Apple TV. I have no sound on some of the recently added movies and TV shows. Have contacted Netflix 4 or 5 times. They have suggested numerous things to try but nothing so far has helped. The latest thing they have suggested is to switch the ends of the Hdmi cable. Everything else works fine on Apple TV. Sometimes I have sound on certain Netflix programs and sometimes I don't. Can anyone please help?