I think I found the answer to my question after reading through the owners manual again tonight. If after entering the song button I choose the "pop up" page, I will enter the page that lets me select a drive and than a directory. Since my 9000's are at the store and not at home, I will have to wait until I go to the store to try this out, but I think I found it! I think I read this page 20 times before realizing what Yamaha was trying to tell me.
Also, if I am reading this correctly, If I go into Part settings, while in the mixing console mode, if I move over using the arrow control to the word "voice", it seems I can go into each part and change the sound I want without going into the record mode. The manual states that I can make the changes then call up the custom voice display and store these settings. All the paramaters can be stored together with the custom voice. If I then save all this as a registration, than I can probably have my changes without actually having to go into the record mode like I had to on the PSR 8000.
I really hope this will work. It's 2:30 AM Sunday morning. I'm up because my 21 year old sun who goes to UC Riverside, just called and woke me up because he an a shool friend had a few too many beers and were needing someone to help one of them win a bet! Now I can't go back to sleep, so I was reading the owners manual again, and the words finally jumped out at me.
Goodnight (or good morning, depending on what part of the world you live in)
George Kaye