The Audio Trigger Widget in the QLC+ Virtual Console uses an audio input signal to control one of three items: 1. It can control the DMX value of fixture channels 2. It can be used to control a scene or "function" as they are called in QLC+ 3. It can interact with another virtual console widget such as the "Speed Dial" which controls the speed of chases or sequences. In this tutorial I cover all three instances and explain how to implement the widget control. QLC+ is an excellent open source lighting control program that works with Windows PCs, Macs and Linux. In this video tutorial I am using the Windows PC version 4.12.7. You can find more information about the program here: https://www.qlcplus.org/ Please consider donating to the creators as a program like this would cost several hundred dollars if it were not open source. I also maintain a website for community theater techs where I provide some information and resources for controlling lighting, audio and using show control in theater productions. My website can be found here: https://comutinytech.com/TheaterTech/