public void setLooping(boolean loop) {
        this.loop = loop;
        if (channel >= 0)
            getRenderer().updateSourceParam(this, AudioParam.Looping);
    }
Set the looping mode for the audio node. The default is false.

@param loop True if the audio should keep looping after it is done playing.
jme3-core/src/main/java/com/jme3/audio/AudioNode.java