> I don't know if it helps anybody, but using a piece of speech software,
> could whatever library it uses be converted to work with the voice for
the iPod?

Anyone who has a development system set up (Cygwin for Windows, or Linux)
and speech synthesis software installed (Windows built-in SAPI5, or Linux
Festival/eSpeak/Flite) can build a voice file. Full instructions are here:
http://www.rockbox.org/wiki/VoiceBuilding

-- 
pondlife