Hi! Go to my site and download synthesizer sounds, and if you want, order some very complete banks. All programmed by me - Patrick Fridh, Sweden. Not just Yamaha sounds - there's more available. Also, check out the Synthesizer Timeline, which is a very comprehensive list of all synthesizers and which year they came out, and more.
Don't miss this site:http://surf.to/synthesite
Thanks for reading! :-)