Thread:Project:Support desk/Text to Speech extension?

Has anyone had any experience adding a text to speech extension to their wiki's?

I'm looking for an open source solution that's as simple as http://www.readspeaker.com. That product looks amazing, it highlights text and reads clearly. I'm wondering if something similar is developed for Wikipedia and the wikimedia platform.

I know there are client side solutions but I can't find an embedded solution that's open source and up and running anywhere. Any suggestions?