Actions on media library objects

I have created a slide that uses one of the media library animations with audio that is in sync with the objects movements. What I want to do is after the last audio tidbit I want the slide to automatically move to the next slide. How do you attach an event to say "go to next page" to the audio clip that is inserted into the animation? ( That option is not available in the properties/parameters for the animation.) If I attach the action to the animation it moves immediately to the next page without playing the animation.

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