Control Spotify from QLab - Execute this AppleScript, and Spotify will alternate between playing and fading up or fading down and pausing, based on its current state to perform the contrary action.
Example of Use:
Utilize one rotary encoder on the SchwiftyBox, employing the button to toggle between play and pause. Turn counterclockwise (CCW) to decrease the volume and clockwise (CW) to increase the volume.
Control QLab more smart! Use the SchwiftyBox and go wireless, if you dare...