For this demonstration, we already have some custom Mac OS sounds we found online (macossounds.zip), so we’ll use those.įirst open your ~/Library/Sounds folder. Before you begin, you’ll either have to make some custom sound effects, or you can download something already made. You can add custom sound effects to your Mac with little difficulty. This last option doesn’t play a sound when you actually click on the volume slider on the menubar and change the volume, rather when you change the volume using the special keyboard keys.