Hi Dan,
basically because there's no demo version for users to try.

The fact that you now have the song to midifile function has renewed my interest in the software.
One Man Band has a similar function song , but it of course can't load Ketron Styles.

Because there's no actual Ketron style editor available ( one of the reason's I haven't bothered with ketron since my sd1 days), I assume the only way to create one's own styles &/or edit, would be in yamaha style format?
I use One Man Band for editing my yammie styles, but I wouldn't be able to use it for editing a Ketron style.
If your song to midifile function works as well as I would hope, I'd be able to convert the odd Ketron midifile across to Yamaha & edit it the way I want. Hence I'd like to see if it can do what I need.