¡Buen trabajo!
Some suggestions... pack your game inside an executable file (.exe) www.pyinstaller.org. Do not expect things from end users... such as install pygame or execute a .py in a shell. You must assume end users are "dumb".
Place in your user interface, an button or control for mute the sound.
If you need help, feel free to contact me. Your dad has my contact details ;-)
Leo