Here it is:
Container settingsContainer = new Container();
PropertyPanel soundProperties = settingsContainer.addChild(new PropertyPanel(GuiGlobals.getInstance().getStyles().getDefaultStyle()));
soundProperties.addEnumProperty("Type", this, "type");
soundProperties.addBooleanProperty("Instanced", this, "instanced");
soundProperties.addBooleanProperty("Loop", audioNode, "looping");
soundProperties.addBooleanProperty("UseAudioLenght", this, "usingAudioLength");
soundProperties.addDoubleProperty("Lenght", this, "length", 0.0, 10.0, 0.01);
soundProperties.addFloatProperty("Pitch", audioNode, "pitch", 0.5f, 2.0f, 0.1f);
soundProperties.addFloatProperty("Volume", audioNode, "volume", 0, 100, 1f);
soundProperties.addFloatProperty("RefDistance", audioNode, "refDistance", 0, 500, 1);
soundProperties.addFloatProperty("MaxDistance", audioNode, "maxDistance", 0, 500, 1);
soundProperties.addBooleanProperty("Positional", audioNode, "positional");
soundProperties.addBooleanProperty("Directional", audioNode, "directional");
soundProperties.addBooleanProperty("Reverb", audioNode, "reverbEnabled");
soundProperties.addBooleanProperty("VFT", audioNode, "velocityFromTranslation");
soundProperties.addFloatProperty("InnerAngle", audioNode, "innerAngle", 0, 360, 1);
soundProperties.addFloatProperty("OuterAngle", audioNode, "outerAngle", 0, 360, 1);
Edit:
audioNode
is JME AudioNode
and type
is JME AudioData.DataType