I echo TomTomSF's sentiments 100%. Joe Waters deserves the top PSR2000 keyboard support award anyone could present for all the terrific information he provides on his PSR2000 website.
http://pages.prodigy.net/watersj/Yamaha2K/index.html Joe's Music Finder file compilation was certainly an intense project which I'm sure took him months and weeks to compile. For him to generously share this with the PSR user community at large (for free) shows just how special many of the people in the Yamaha PSR user community really are. I'm glad I was able to contribute some of my song style selections along with a number of other contributors as well. Another invaluable PSR keyboardist (& software programmer) I want to mention is: Michael P Bedesem. Thru his generous talents as a computer programmer he offers our Yamaha PSR keyboard community so many VERY useful PSR utility programs (free) which improve PSR file (style/songs/registrations) creation and management. Checkout/download from Simon Williams (another terrfic PSR devotee with an awesome website and great PSR keyboard aftermarket products available as well) all of Michael Bedesem's excellent utility programs:
http://www.svpworld.com/psr_software.htm