Youtube has lot of videos where the important part is the music. Sometimes I like to save it to .ogg (or .mp3 if needed). I write it down how I usually do:
I find some song that I want to save, for example: http://www.youtube.com/watch?v=6gaZYk85rnA
What you need? On a Debian system, the packages youtube-dl, mplayer, […]