WebPlus X6: Click Sound When Button Hit

Hi, I've got a couple of buttons. However, when they are clicked, there is no sound. I'm looking for the buttons to generate the standard 'click' sound when they are clicked. Does anybody have any suggestions of how you would do this?

I've read up on threads regarding this but was unable to find something which matched what I was after. Then again, maybe I missed something.

Any help would be great. Thanks, JL.