How to save the audio of the video clip Youtube?

How to save the audio of the video clip Games for girls on youtube? [Link removed by moderator] I want to add audio clips into one another clip.

To record audio that is playing on your computer, see here: http://manual.audacityteam.org/o/man/tutorial_recording_audio_playing_on_the_computer.html

If you require help with Audacity, please follow the instructions in the pink panel near the top of the page.
Topic locked.