Yup, just read the restrictions: here is part of the restrictions:
Quote: "Any use that involves wide distribution or long lifetime is probably not OK, whether or not it is commercial. Audio clips used in songs, videos or game levels cannot be made publicly available on the internet. Building or prototyping a software package using our audio rather than recording your own prompts is not OK. If you aren't sure, ask. If you need the software or a license to use the audio please contact Wizzard Software."
Went to the Wizzard site. Each voice, which will synthesizes all words costs $295.00. Kind of steep. I will still be looking for somebody to do it for me for free.