I use: BIAB 2014 ET Pk./Windows 7/Lap Top is HP i7/usb Mixer/Ketron MS 20/PreSonus AudioBox 22vsl/Powered Speakers(X two). Is it feasible and or possible to route all or part of the midi tracks thru the Ketron and still use RealTracks on designated tracks in the same song? The Lap Top is usb capable as is the mixer. The 22vsl is usb powered/in and out X two/+ midi in and out X one. The Ketron MS 20 has midi in and out X one + 1/4 inch. L & R out X one. Those forum members old enough :)to remember the MS 20 from Ketron know it as a full featured sound module with lots of great piano and sax sounds, Not cheap, $1,400.00 in the 90,s. Is there a routing that I could try?-------Leon