HI BAM,
YOu need a floppy to load software into the KN800. You have jogged my memorey and I do remmeber that it was an option, and an expensive one at that. The disk drive is special for Technics only.
Are you in the US. I could sell you my KN800 with all the software and songs. It does Midi also after I had a special Rom burned and installed in it three different times.
I also have a Technics KN6000 that I could sell and also a Yam PSR9000. I am in California.
Bill