Mute volume control and start-up sound

[spiritwalker54]

Is it possible to turn off the automatic sound that I hear every time I increase and decrease the volume of my speakers? Also, is it possible to mute the sound heard when I turn the computer on without compromising my computers operation in any way.

 

[Melrose]

This is what I use Startup Sound Pref pane. Free. 🙂