Text to Speech for Xenforo? Button to read posts aloud for blind or visually impaired people?

[Deepmartini]

Is this possible? I've seen a few services that do this on Wordpress blogs and it is helpful for an older audience. Some examples I found are:

http://www.ispeech.org/text.to.speech

http://wordpress.org/plugins/tags/text-to-speech

http://gtranslate.net/

Has anyone successfully integrated this into a Xenforo forum?