@Override
		public void mouseWheelMoved(MouseWheelEvent arg0)
		{
			//how much does the wheel turned?
			int howMuch = arg0.getWheelRotation();
			//how loud is the sound at the moment?
			int percentage = audioSlider.getValue();
			
			//no decision about how much the wheels turns
			//use for every event just one step
			
			//here forward -> louder
			if(howMuch < 0)
			{
				percentage += 10;
				
				if(percentage > 100)
				{
					percentage = 100;
				}
			}
			//here backwards -> quieter
			if(howMuch > 0)
			{
				percentage -= 10;
				
				if(percentage < 0)
				{
					percentage = 0;
				}
			}
			//change volume local:
			audioSlider.setValue(percentage);
			
//			//change the volume and the slider in the whole application
//			vm.changeVolume(VolumeControlGUI.this,percentage);
		}