Sorry for the delay in getting back here again- the "magic word" was DOWNLOAD- we were trying to add Realtracks to downloaded MIDI files, and I guess RT was saying, "Huh???" NO WONDER there was no "rendering time"- congrats on figuring this out.
Now, I'm thinking that DLing a MIDI file, letting RT determine the chords (which it should be able to do very acurately I would think), THEN applying a RB to the chords, is the best way to do this- do you agree?

Rusty