Splitting Audio from Video?

You guys know of any good software for separating video an audio?

ummm any software? like final cut,windows movie maker, i movie, im not sure if thats what your asking but i dont really get what your asking?

Ok, I have a video, but I only want the audio clip from it. I’m looking for software that can split them into two separate files.

any video converter(is a program) convert the vid to MP3