Hello, I'm new to the mac and i've been trying to disable all system sounds. The sound tick is already unchecked in system preferences where it says "play user interface sound effects". I'm talking about sounds like: In firefox, do a search, start typing for stuff. If nothing is found, it keeps making a sound. In terminal, pushing tab too many times starts making a beep. Any idea how to stop all of these sounds while still being able to output sound from itunes or what not. I've been googling all over and cant find anything. Thanks!