Removing audio stream from .ogm / .mkv

I am an anime binger, therefore I have loads of ogm / mkv with eng / jap audio and eng subtitles. since I am usually a dub hater, I am running out of HD space. to save space I have decided to remove all the english streams from my anime. How do I go about deleting an ogm / mkv audio stream?

no clear idea about this kind of thing, but you can go to this site www.sharewareguide.net for more info .lots of tools for audio/video problems