Synchronize Audio and Animation

Hi,

I'm trying to make a little mobile application that would be used to "complete" the visit of a monument. Using augmented reality on a postcard, it displays the monument in 3D and enables the user to start a short audioguide.

I want to animate the 3D model (point things out on it for instance), but depending on what the audioguide says (it is prerecorded, so it is only a matter of timing). Since there is no event to trigger the animation, I don't know how to synchronize it with the audio... Plus, I want to be able to pause/stop the animation if the user pauses/stops the audioguide (and to start it again when he presses play).

I'm not asking for a script, I'm here to learn so a few clues would be more than enough :).

Thank you!