More and more people are playing multimedia clips through their laptops. Here's a quick way to handle the volume when you do not have a sound person in the room. Purchase a tiny headphone volume control (Radio Shack) and plug it into the output of your laptop. Then plug your output wire going to the sound system into the volume control. You can then adjust the volume of your multimedia clip quickly without the need to use the internal volume controls of the laptop which is usually a little bit of a hassle.