I probably asked a wrong question. Scratch my "style" question.
My problem was more like I can't play any of my KN3000 or KN5000 disks on my KN6000. I recorded a lot of songs into the 5000's composer saved them into the disk, now I just want to replay it on the 6000, I think I didn't have a problem playing 3000's stuff on my 5000 WITHOUT having to re-save, or re-program.