That's awesome! At least to a non techie like me who'd never have even known where to start to look to figure it out. I haven't tried it yet but, but even I can copy & paste!
I've realised the positive thing about using Ardour as the host and mixer is that I can send the FX send control messages on the same channel as the note data, because it's all part of the same track. That means I can use the same binding for the FX sends on all tracks. With jack_mixer I was sending the MIDI data to the mixer on a separate channel, but needed different bindings for each mixer strip.
I don't understand the implications of your jack transport tempo changes comment. Can you explain or point me in the direction of some documentation?
Live Keyboard rig - Carla and Jack_Mixer
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