Starting and stopping sounds at a keyframe

Starting and stopping sounds at keyframes in synchronization with animation is the most common sound-related task.

To stop and start a sound at a keyframe:

1	Add a sound to a movie in a layer by itself.
	To synchronize this sound with an event in the scene, choose a beginning keyframe that corresponds to the keyframe of the event in the scene. You can choose any of the synchronization options. See Adding sounds to a movie.
2	Create a keyframe in the sound layer's time strip at the frame where you want the sound to end.
	A representation of the sound file appears in the time strip.
3	Double-click the ending keyframe and click the Sound tab in the Frame Properties dialog box.
4	Choose the same sound from the Sound pop-up menu.
5	Choose Stop from the Synchronization pop-up menu.
	When you play the movie, the sound stops playing when it reaches the ending keyframe.
	Shift-dragging the playback head repeats the streaming sound of the frame you are on. This is useful for aligning sounds to your animation.