Audio as it relates to story telling can be used to express the mood of a particular scene or part of that story. For instance, in the movie The Shining, every time the boy saw the ghosts of the twin sisters I believe it was the same theme music playing; and that music expressed the fear that the boy was feeling when he saw the ghost twins.
When I listened to the radio show, they used music to transition from one scene to the next, so the theme music would come on and then go silent and then come back on to move onto the next phase of the story. So I guess what I’m saying is that you can also use audio to transition scenes.
Without audio, it would be very difficult to capture the emotions of the characters in the story and in return create emotional connections with the audience.
-Unable to embed the live radio show or the movie The Shining