I'm trying to use Reaper as a midi-based sequencer with my Kurzweil PC3X and an old Tascam US-224 DAW. (I've already used Reaper successfully to record the audio output from the PC3X.) I successfully record the MIDI information from the PC3X. And I can play it back too, driving the PC3X, just as I would expect. However, when I look at the Reaper docs, they imply that I can treat a MIDI-based track and a WAV-based track in the same way. That implies to me that if I move the volume or pan sliders in Reaper while I play my recorded MIDI track, that will pass volume and pan information to the PC3X. But it doesn't work. I presume it should, otherwise how can I do mixdowns with (say) automated control of the PC3X voices with Reaper? I know I'm overlooking something elementary here -- but what? Thanks for any help .... Regards, EJB