I tried hooking up the Sd2 to the s900 to play midi files out of the ketron. I midi out from s900 to the in of the sd2. In the panel I found the midi selection page and selected output for song. I tried playing the midi but it came out scrambled. drums were missing, etc. Has any one ever tried this, if I can't get it to work, its going on ebay, the ketron sd2.