I am test flying the demo version of VOXATC with FS9. Are the two ATT licensed voice available in the demo? There seem to be only two and they sound very mechanical like Microsoft Bob and Mary.

They are Microsoft voices you are hearing. The ATT voices are not available for demo and there was a special arrangement to include them on the deluxe DVD at a discounted price. You can go to the ATT site and input specific text on their website and it will read back to you with their voicesets.