AUDACITY help please

[AOXOMOXOA]

I'm hoping that someone can help me with what should be the easiest thing in the world.

I am playing a video that I shot with my video camera. and I am trying to record the audio from the video file.

I am using the free Audacity and i can not figure it out for the life of me. I have recorded audio using this software in the past but now I can't do it.

I am running windows 7 ult, onboard sound card. any thing else you need to help me just ask.

thank you.

[Joni_78]

You should demux the audio, not record. What format is that video file?

[AOXOMOXOA]

it is AVCHD .MTS file from my video camera.

also trying to do it from an .AVI file

I don't know what "demux the audio," means.

can you tell me how to do it?