Hi,the software is compatible,a good site for FREE software( this software is often SOLD! on Ebay in the US.)
www.ca-software.com/technics/downloads/index.htmwhere it says "select instrument" click on PR604 and it will show you the lists for your PR, if you select KN7000 and KN6500 it will list more styles. the files are in zip format.
best wishes John Dawson.
P.S. just checked my tables and the software for the KN3000 will also work on your PR so try the listing for the KN3000/KN3500.