Extracting audio from Kane and Lynch?

I was wondering the easiest way to extract clear crisp audio files from kane and lynch on the PC. I tried using fraps but it slows down the game including the speech. I tried going to the files on CD and on HDD but couldn't find the files.

Im looking for the dialogue outside the Tokyo night club inparticular. I want to use it on a song that im working on, obviously i don't plan to profit off it, ill release it for free.