Like Matt said, you're going to need an external interface that has line-in capability to get the audio from the Ketron back to your computer.

I've got a Ketron SD-2 (and unfortunately, it is failing, so I can use it much anymore, however....).

The Ketron accepts MIDI input from either a computer or a keyboard. It generates the audio from that input and sends it out via a stereo audio connection. That's why you need the "line-in" on your computer to be able to record the Ketron's output in real time (you have to records it; you can't render it like you can with a DXi or a VSTi).

So, something like Matt's suggestion should work for you. Here is how I had my system set up (I have an M-Audio Fast Track Pro, which has audio in, audio out, MIDI in and MIDI out capability).

My Fast Track pro is connected to my computer via USB and is seen by the computer as an available sound card. The USB is a bi-direction connetion that supports audio and MIDI data across the connection. I then have the MIDI out of the FastTrack connected to the MIDI in of the Ketron (which allows MIDI data from the computer to drive the Ketron; however, you could just have the MIDI out of your electronic keyboard connected to the MIDI in of the Ketron, which allows the keyboard to drive the Ketron). Then the output from my Ketron goes to a stereo audio input on my hardware mixer unit and then the mixer unit is connected to the audio in on my Fast Track pro (via balanced cables for clean sound) so that the audio data from the Ketron can be recorded back into the computer. You don't need the intermediary mixer (the Ketron audio out could go directly to the audio in of your external sound card); however, this allows me to also use the mixer for microphone records and other instrument recordings.

Below is a rough picture of how I do it with my laptop:

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John

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