I can't listen to Reason when running it as ReWire slave to Live. It doesn't appear as an option in the track; I only see the options "None" or "Mixer"

  • Live Versions: ALL
  • Operating System: ALL

Please be sure to look at the Input Type chooser in Live to select Reason; make this visible by selecting In/Out from the View menu. You were probably looking at the Device chooser, which is for automating controls in Live. Also be sure that you have switched monitoring to In for the track. To learn how to use Live and Reason together, please see this ReWire tutorial.