I'm hoping for a KSP script that will allow Kontakt to treat Sibelius' text-based note-on messages like any other note-on. "~N50, 100" should be sending pitch 50 with velocity of 100 to Kontakt, but instead it is doing nothing.
This format is what Graphical MIDI Tools "ghost notes" enters, fyi. So it must be working for others using Sibelius Sounds or maybe NotePerformer. But not for Kontakt it seems, at least by default.