> Go to Prefs->Sounds & Alerts.
> Select General as the application.
> Set the System Volume to Off.
> However, you may find that it is already on Off and you are still
> getting clicks - in which case you need to set it to 1 and then back to
> Off. There is a bug somewhere which turns the system sounds back on
> without updating this value, but I haven't worked out what causes this
I suspect that the OP wants to mute the so-called 'clicks' without stopping
any of the other "System Sounds". I reckoned that he already knew how to do
that because he had followed the path to the right menus already.
If that's the case, it is probably impossible unless HackMaster (or
equivalent) gets installed. I was going to say this earlier, but waited for
someone to break my assumption.
Roy S. Schestowitz