I know I’m not alone in finding the Mac startup ‘bong’ extremely annoying, especially if you have to start your computer in a meeting or public place. Pre-Intel hardware, the ‘bong’ was muted if you plugged in headphones. Since the change to Intel, Apple have not provided a way to stop the sound. But there is a third party solution. ‘Startupsound.prefPane’ allows you to mute your Mac when it starts up. It’s one of the first pieces of software I install on all my new Macs.