Hi Rog,
Basically it's a style conversion program, converts one brand of keyboard style to another.
Used to use it years back , when I was forever swapping keyboards. Gave me a sense of security that if I swapped boards, I could at least have some of the styles.
Don 't think I ever used them, the new keyboards always had better styles. Haha

In the last few years I haven't used it because the new styles are too complex . The few I had tried converting needed too much work to bother with.

I got far better results converting them manually from a midifile.
I have a few core style conversions that I tweak up each time I upgrade my Korgs.

Only reason I mentioned it was, just in case you had the odd song style you hadn't found a replacement for. Some of the yammie song styles appeared to convert ok , compared to the factory style conversions.