Are there any additional AT&T Natural Voice voices that are compatible with 1.2.1 that the PhatBox software provides? I've found voices for 1.4, but they won't install without 1.4 installed.
Phatvoice has shown me any SAPI v4 or v5 voice I've tried (which, by and large, suck when not purchased.)
My work PC has a corrupt PMM install so I can't speak to whether it allows non-AT&T SAPI voices.