|What I would do in this scenario:
Posted: 12/27/2010 11:39:14 PM
Download the program Audacity. It's free. Audacity has a feature where you can record whatever sound is playing on the computer. Just hit record and it will record whatever is playing. I have done this if I want to grab a quick clip of something. Give that a try first since it is the easiest way.
If it somehow happens where Audacity has issues with the recording having sound dropping in spots or the quality sucks, google "extract audio from mkv" and decide on whatever program to use to rip the audio from the mkv file. It looks like many just rip the whole audio track, so if you use one of those, you will need a program like Audacity to edit it out whatever part you want.