Trim the (noisy) silence (especially at the start, because
that delay from making a change and playing a sound is a little
annoying), with fade-in and fade-out
Edited with Audacity
File(s) history:
7f5140bbb418f4a5b6252f8b62c9152ef3f657f3
955bd73feccefe8e8ca54d946d6223b43a0836ed