@Override
    public void read(JmeImporter im) throws IOException {
        super.read(im);
        InputCapsule ic = im.getCapsule(this);

        // NOTE: In previous versions of jME3, audioKey was actually
        // written with the name "key". This has been changed
        // to "audio_key" in case Spatial's key will be written as "key".
        if (ic.getSavableVersion(AudioNode.class) == 0) {
            audioKey = (AudioKey) ic.readSavable("key", null);
        } else {
            audioKey = (AudioKey) ic.readSavable("audio_key", null);
        }

        loop = ic.readBoolean("looping", false);
        volume = ic.readFloat("volume", 1);
        pitch = ic.readFloat("pitch", 1);
        timeOffset = ic.readFloat("time_offset", 0);
        dryFilter = (Filter) ic.readSavable("dry_filter", null);

        velocity = (Vector3f) ic.readSavable("velocity", null);
        reverbEnabled = ic.readBoolean("reverb_enabled", false);
        reverbFilter = (Filter) ic.readSavable("reverb_filter", null);
        maxDistance = ic.readFloat("max_distance", 20);
        refDistance = ic.readFloat("ref_distance", 10);

        directional = ic.readBoolean("directional", false);
        direction = (Vector3f) ic.readSavable("direction", null);
        innerAngle = ic.readFloat("inner_angle", 360);
        outerAngle = ic.readFloat("outer_angle", 360);

        positional = ic.readBoolean("positional", false);
        velocityFromTranslation = ic.readBoolean("velocity_from_translation", false);

        if (audioKey != null) {
            try {
                data = im.getAssetManager().loadAsset(audioKey);
            } catch (AssetNotFoundException ex) {
                Logger.getLogger(AudioNode.class.getName())
                        .log(Level.FINE, "Cannot locate {0} for audio node {1}", new Object[]{audioKey, key});
                data = PlaceholderAssets.getPlaceholderAudio();
            }
        }
    }
Called internally by com.jme3.util.clone.Cloner. Do not call directly.
jme3-core/src/main/java/com/jme3/audio/AudioNode.java