Hi Tony,
the only way I can think of is to turn them into a .mid file by changing the .sty into .mid extension, then load them into the kn sequencer and use the create style from midifile function in the kn. I am of course assuming the kn6 has this function??
A fair bit of work ,though.
Other option is to find someone with an up todate EMC style convert for the kn. It transforms it into a kn5 style. ( Not 100% sure if it does the psr2000 yet)

best wishes
Rikki