Maslovsky,
Now that I see your post, I have to ask:
What about AUDIO DECODING LIBS ? You have a checkbox for "MAD" ... I installed madplay and MADlib and everything I found with "MAD" ... I check it and I get only silence ... The other option, ffmpeg or something like that, introduces great slugginesh in my video frames count per second ...
Sorry I am no expert on linux, so maybe my question is truly dumb, but if you have some spare secs. to explain what is "MAD" audio decoding and HOW can it be used, I would be very grateful.