How to enable this option on Audio Setting?

[YousefSlimani99]

I'm trying to figure how to unlock it but I have not idea how to do that? (I heard this option will automatically silent the music when you play a song on your music player)

[DarioSamo]

You must beat all of Don Fachio's trials to unlock it.

(Hover over the option, it's not currently supported on Linux but a PR for it is in progress).

[YousefSlimani99]

Don Fachio's trials

Like all of them? dang