@Override
        public void onAnimChange(AnimControl control, AnimChannel channel, String animName) {
        }
AudioTrack is a track to add to an existing animation, to play a sound during
an animations for example : gunshot, footstep, shout, etcetera.

Typical usage is:
<pre>
AnimControl control model.getControl(AnimControl.class);
AudioTrack track = new AudioTrack(existingAudioNode, control.getAnim("TheAnim").getLength());
control.getAnim("TheAnim").addTrack(track);
</pre>

This is mostly intended for short sounds, playInstance will be called on the
AudioNode at time 0 + startOffset.


@author Nehon
jme3-core/src/main/java/com/jme3/animation/AudioTrack.java