TK: I already know some of the answers, but since the 'accident' on Monday, i'll repost my (long) questions just in case you or anyone else still has some new ideas or solutions. Or just in case someone else has a use for some answers given to my questions for his own project. Thanks for the replies in the original post. I'm about to finish the design of my MIOS based DB50XG project and i have some final questions. 1: How do use the RS232 interface together with the normal MIDI I/O, witho