The Audio Track obviously works very closely with Audio Clips, and is possible to proccess audio clips without the need for you to have an Audio Source on the target Actor. The Audio Track has few, but important settings which can be set in it’s inspector panel to control how audio clips in this track are played.
Audio Clips set to be played in the Audio Track, are able to be trimmed or be looped simply by setting the clip to the desired length. Furthermore as with most ActionClips in SLATE, the blend in/out properties in this case control the fade in/out that the audio will have.
The Audio Action Clips are also able to have subtitles text that will be shown on screen to go along with them, which makes more sense in the context of an Audio Clip played within an Actor Group, although it’s quite possible in the Director Group as well.
Audio pitch is also modulated by the current time of the game. As such if you alter the time for a slow motion or fast motion effect, the audio will automatically follow along.
Finally, remember that splitting the clip will retain it’s offset correctly, thus it’s possible to split a big dialogue audio or maybe music, into small partial clips.