When right clicking on most files in the right hand side view pane, my system gives me the windows ding .wav sound. I don't have any sounds activated in DO and can't figure out why I am getting this sound, and more importantly, how to turn it off. The sound only occurs when right clicking on an individual file, not when right clicking on a folder. Any ideas?
It's probably a context menu extension that you have installed.
Try following the steps in Crash, exit or high CPU when right-clicking certain files (the FAQ is written to help track down crashes from the context menu but you can apply the same techniques to work out which one is causing the sound).