The music player is hidden next to the 'Apple' logo in the header/menu bar at the top of the page. Hover over that spot and the 'play/pause' button will appear; click it to stop the music.

To see this working, head to your live site.
Edited: Jul 19, 2019
How Do I Turn On/Off The Background Music?
How Do I Turn On/Off The Background Music?
3 comments
3 Comments
bump!
What's the name of the song? I love it.