A computerized audio or video signal control system controlled by an announcer and having a display of the available signal sources and scheduled events which can be activated, mixed, faded and cued by the announcer in the scheduled order or in an order the announcer desires. The synchronization is achieved by monitoring addresses of instructions in at least one of the threads. The window can then be lifted or slid by applying force to the finger grips. When the package is mounted, a pair of charged electrode portions and a pair of coated electrode portions are soldered to a surface of a substrate. A system and method of heating medication in a reservoir and adding medication to a gas flow is also provided. In addition, they exhibit lower inherent mammalian cell toxicities than conventional antimicrobial peptides, and overcome problems of toxicity, immunogenicity, and shortness of duration of effectiveness due to biodegradation, retaining activity in plasma and serum.