The Rewire is also showing up but I think it has an interesting issue that is out of your control. If the host also acts as a rewire master then it takes over rewire before MUX so you are not able to use it. This will be host dependant and if there are any options to disable Rewire in the host (I could not see any in Renoise and Orion). It kind of works in FL Studio - you can add a rewire client. I tried adding Renoise as a client but the transport does not work within it. If I start the song within FL Studio it does not start playback in Renoise.