For radio mixers which come with fader auto-start. So when the fader is pushed up the cart plays.
COMPLETE
"This has been added in the PlayIt Live 2.17 to the External Devices feature assuming you can interface with an Arduino device for serial connection"
Comment on this feature request:
Daan Berg commented
This would be great, indeed! It's sort of possible by 'abusing' the keyboard button function in combination with software that translates pulses from a serial or parallel port to keystrokes. Some more recent radio mixers have a USB connection carrying audio and start/stop bits, and they are sometimes accompanied by software that does that trick too.
But these tricks obviously are prone to breaking, and therefore it'd be great to see native support for this idea in the software.