Which software can I use to extract an audio track from a video?

Solution 1:

Command line:

ffmpeg -i input_file.flv -vn output_file.mp3
ffmpeg -i input_file.mov -vn output_file.mp3
ffmpeg -i input_file.avi -vn output_file.mp3

If ffmpeg is not installed ...

sudo apt-get install ffmpeg

and of course you need the audiocodecs required to play the video/audiofiles.

WinFF. A simple GUI to FFmpeg. Winff is in Ubuntu's repositories. Do sudo apt-get install winff to install it.

WinFF