How can I record the audio from a YouTube video?

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Tags

1. #record
2. #input
3. #recorder
4. #video
5. #interface
6. #click
7. #music
8. #sound
9. #window
10. #select
11. #while
12. #button
13. #system
14. #audio
15. #source
16. #identify
17. #youtube
18. #settings
19. #online
20. #software