I've slept on it and some of this is a bit clearer, thanks. So now, a couple more questions.
1. Can you not use the drawbars live? It seems they are only used to edit sounds.
2. Using just one player, can you load another song while the first is playing.
What helped me understand some of these questions was my brief experience with the Micro Arranger. They were some of the items that hung me up back then.