Here is a link to a .zip file with (8) different US English TTS voices and required DLL files for Primo 2.4. There are (2) Loquendo 7 TTS voices (most natural sounding, in my opinion) and (6) Nuance TTS voices.
[Only registered and activated users can see links. ]
Sent from my HP SlateBook 10 x2 PC using Tapatalk
EDIT: These files are for the WinCE version of Primo. Also, I recently found out that the Loquendo 7 voices don't work with all versions of Primo 2.4. The do NOT work with 126.96.36.1997029, but the DO work with 188.8.131.525512.