Sorry for this question, but kind of NSFW, I'm trying to remove vocals.....

Okay, there's this porn video that I like the background music. So I downloaded it and separated the audio from video.

Now, what I am trying to accomplish is to remove the performers' moaning, screaming, etc. and keep only the background music.

I looked for techniques on how to remove vocals over at Youtube, but the techniques discussed there work only for songs.