MKV audio

I have an MKV video file,and when i watching it i hear 2 languages at the same time.
I extract the mkv audio file with the mkvmergeGUI and the languages are in the same audio file,like someone talking japanese over the english language.
Is there any trick or software to edit and remove the one language?

You already posted this question in another thread. There is no need to open another one.

This thread is closed. Please everybody refer to the other thread here

btw, as already pointed in the other thread, it is not possible to do what you are asking :wink: