[APP][Pro] Google Services - App for Translate and new Text-to-Speech for any device with url input

If you send that URL to chromecast yourself, does it work?

and, try this URL for a moment please?
https://translate.google.com/translate_tts?ie=UTF-8&q=Testing testing.&tl=en-GB&total=1&idx=0&textlen=16&client=tw-ob&prev=input&ttsspeed=1&.mp3