This tutorial assumes you know the basics of playing sounds and 3D physics, but it's an "advanced" tutorial, I won't explain line by line what each script does.
And of course, this is all based on my experience, opinions and workflows, as a solo dev. This will be useful for small and medium projects, it's pretty solid but no AAA solution (we'll talk about that at the end).
This was done in Godot 4.1.2