The title kinda says it all.  Is there a way to Cancel or Pause a currently running job?  I've searched for a button, right click option, or some other such thing, and I've not found one.   

Then again, I'm an old guy, and my eyes aren't what they once were.

You are correct, for now there is no way to pause the job. I need to think of a way to make it work once you need to resume it again.

If you have the preview setting turned on and close the preview window, RIFE-App will end the job while completing the encoding so the video file can still be played back.