For any SmartThings users here, I found something on GitHub that will allow you to control SmartThings from the command line. This could be easily integrated with Vixen, xLights, or FPP to turn switches/lights on and off.

In my case, I use this as a backup. There is a timer set thatís supposed to turn the controllers on 30 minutes before the show, but sometimes it fails (thanks, Zwave).

So I have this running on my Windows 10 show computer (switching it to FPP soon). In the Vixen startup sequence, I have it switch on the smart outlets for the show. I also plan to have it dim the porch lights and switch them to red/green.