Yeah, you are probably right. Anyway, i think i tried to patch getting the first audio stream id to getting requested audio stream id (changing argument to the GetAudioInfo) and it didn't work - SetStreamID changed the stream id after that to constant.
It is possible, that this can be cause of muted VOB.. Maybe we could try to add (not set) the stream index to the private stream constant, but it is just an idea..
