private void registerInputMappings() {
        addMapping("togglePlayPause", new KeyTrigger(KeyInput.KEY_P));
        addMapping("togglePositional", new KeyTrigger(KeyInput.KEY_RETURN));
        addMapping("dryFilter", new KeyTrigger(KeyInput.KEY_SPACE));
        addMapping("Volume+", new KeyTrigger(KeyInput.KEY_I));
        addMapping("Volume-", new KeyTrigger(KeyInput.KEY_K));
        addMapping("Pitch+", new KeyTrigger(KeyInput.KEY_J));
        addMapping("Pitch-", new KeyTrigger(KeyInput.KEY_L));
    }
### Filters ###
Changing a parameter value in the Filter Object after it has been attached to a Source will not
affect the Source. To update the filter(s) used on a Source, an application must update the
parameters of a Filter object and then re-attach it to the Source.
jme3-examples/src/main/java/jme3test/audio/TestOgg.java