I am currently building my eLearning course using storyline articulate, and whenever I preview the course and I click the previous button, it does not seem to talk. In other words, once I have passed any given slide and I go backwards to review that slide the audio does not play. It only plays if I did not wait for the audio to finish playing before clicking on the next button and it only begins playing from exactly were I left off. How do i rectify this. Also i am trying to include a stop button and a pause button as well how do I do this.