Rogue Amoeba has a new major version of its Soundsource tool ready. It allows you to specifically reroute or refine sounds on the Mac. If you want to determine how loud a single macOS app should be, ...
If you miss double-clicking MacOS Sound Files (type ‘sfil’) to play them from the Finder, try installing the Playsnd faceless background application. Use the OS X Get Info box to tell the Finder to ...