Now V9T9 works!! Here is the work around:
The author instructed me to install Zulu SDK version 8 (no higher).
It is here: https://www.azul.com/downloads/zulu-community/?version=java-8-lts&os=windows&architecture=x86-64-bit&package=jdk
Then I edited the .bat file by adding this PATH statement:
PATH="c:\Program Files\Zulu\zulu-8\bin";%PATH%
Voila, V9T9 sound and speech works on Windows 10. And it seems the game modules and disk drive setup works too; although to what extent, I am not sure. But Parsec works and so does TI-Writer and I Editor/Assembler starts.
Thank you Ed!!
Hope this helps others.
John L Kemmis