I just got inspired to call Yamaha again. I nice lady told me they had answered this question for Scott Yee!!
I said what does that have to do with me?
Anyway I finally got through to a technician, and he worked on it for quite some time.
He was able to get the Speedy Mouse to work by tweaking the settings. I was not able to, but he has a newer OS than I do.
He was not able to get the Karaoke Girl to work right.
He said Yamaha Japan is closed for New Years but that he will get back to me as soon as he receives OS upgrade, and/or any information regarding the Vocal Harmony problem. He said that while the keyboard he had had a newer OS, it was not yet available in any form that could be sent out. In other words, it's in his keyboard but he doesn't have it on computer in software form.
He then told me that my case had been closed out because they had answered this question for Scott Yee, and there was a note that Scoot and I are in the same band, so they closed my file out too. I suppose somebody assumed that since we asked about the same problem, that we were "together".
DonM