I know it's on my AWE64 cd. I think it was installed with the driver suite along with the multimedia decks and wave studio. To find out i'd have to reinstall these things 😀
EDIT: Just checked. Ain't there!!! Just SoundOLE which is "Creative Sound Recorder". I know I have TextOLE somewhere.
Mindmaker Prody Parrot also used the same speech engine and I think it had something like Text OLE but I know Prody isn't what you're looking for. I'd suspect TextOLE might be on TheMAN's sb16awe cd image.
EDIT 2: TheMAN's cd has it. tasstupg/ folder contains a setup that installs Text OLE, but I can't get it to install in Windows 98SE. Says some crap about a bad install script D:!!!! (way to go InstallShit eld)