I have a Casio CDP100 keyboard, and I cannot find a way for Reason 4.0 to recognize the MIDI source. I have connected my keyboard via midi cables to an E-MU audio/midi interface, and my mac/reason 4.0 will not detect the keyboard. It has nothing to do with my connections because the MIDI IN light on my interface illuminates when the keyboard is triggered so it is definitely something to do with the compatibility of my mac and the casio product. Can someone please help? Thanks.