Adding Sound To Buttons

Hi, I'm an Authorware defector evaluating Lectora. The button creation options are quite extensive, but I can't seem to find how to add a sound (i.e. 'click' etc) when a button is pushed. Hi, I'm an Authorware defector evaluating Lectora. The button creation options are quite extensive, but I can't seem to find how to add a sound (i.e. 'click' etc) when a button is pushed.