Make a midi track. Draw in a space in the track (pencil tool). Double click that, set quantize and snap on and draw in a shit tone of quarter notes on C#1 (this is the sound I prefer, you can change if you like). Once that is done go to devices: VST instruments and load LM-7. Set the output of the midi track to LM-7.
Now to get that to audio and not midi: Set the locators around the midi track, solo the midi track and exsport it into pool and audio track.
It's possible there is an easier way, this is just the way that I would do it.