A control device for controlling a liquid droplet is provided. The method provides for molding small aerogel particles into larger aerogel particles and selecting a desired granular range of the molded aerogel particles. The slit aperture collimator has either a corresponding septa assembly or a corresponding crossed-slit collimator. For example, based on where a stroke begins and ends on the screen relative to character position, different animated characters can be selected and controlled. An audio module comprising part of the computerized wagering game system is operable to play sound through two or more speakers, and is further operable to apply audio object location processing to the sound so that it appears to come from a specific location.