Google India has added Hindi in the list of language supported by Google translate. Google Translate provides automated text-to-speech translations and though the Hindi translation at this point isn’t close to perfection, it surely is a great beginning.
You can also use Translate toolkit to easily enable translation for your website as well.
Bonus : If you are a Bollywood fan, type in any of the famous dialogue and click on the speaker. Have fun.
mera hath