Hi Nick, thank you for the answer, and thank you to Choppin and Scott too. Did you try to connect the DP-10 to the other pedal IN, and see if the Casio sends something on the MIDI OUT? A sequence of continuous CC messages would suffice to control software pianos like Pianoteq, that can be configured to get continuous sustain on any CC number (not necessarily CC #64). Please, can you try this quick experiment? I hope the message is clear, again sorry for my English. Massimo