When I click on buttons in Chrome or various other buttons in KDE on Ubuntu 12.04 Precise LTS blahblahblah, a sound is made. I can't seem to find a way to turn off these click noises. I really want to turn them off. I like my silence.
Try running gnome-control-center inside KDE then go to Sounds and in the next screen, click on the fourth tab "Sound effects" and turn the volume all way down (or simply click on the on/off button next to it). It worked for me in Totem (video player) and Nautilus (file navigator) (try the close button in the Help-About window). Not tested in Chrome.
Using Ubuntu 12.04 LTS with KDE packages installed afterwards.