Audio channel selection not working

[nautilus7]

Hi, I have an xtrend 4000 and I am experiencing a problem related to audio channel selection. Here is a sample https://drive.google.com/open?id=0B5...W1DbE1wSGJIdDA

This video is captured from a satellite feed. It contains 4 audio tracks. Second audio tracks contains 2 different languages. Left channel is english and right channel is greek.

For me, selecting only left or right audio channel does not work. Whatever I choose, I always hear both left and right channel, both languages. Can you test if you can hear only english or only greek language?

Thanks.