Just wondering whether anyone has got a Text to Speech engine installed on the Pi?It would make a great addition to almost any programming project to make it talk to the user!
Use the following command to install festival using Debian
$ sudo apt-get install festival festival-freebsoft-utils
To make it speak simply pipe it the text or file you want it to read, like so
echo "Hello World"| festival --tts
flite is a cut-down version of festival which I have found to work very well on small ARM hosts.
I'm not sure if you are looking for a premium solution, but Cepstral just released their Callie voice for use on the Raspberry Pi. You have to call them atm to get pricing info etc, but if you don't mind paying something, just wanted to put it out there as an option.