QLab cue variety based on day of month

Let's say you have a production where you want some of the sound or video design to be slightly different each show.

You can do this with AppleScript using a script cue in QLab.

QLab serial projector control with AppleScript

If you are using QLab for video cues, I suggest having it triggered by the light board as most projections need to be synchronized with lighting. That way projected scenery will fade in and out with area lighting during scene changes. It is fairly easy to connect a USB MIDI interface between the Mac and the "MIDI OUT" of your light board.