Will there be a miracast implementation

Thank you for the product I'm using the beta pro version and it's working so far except I'm experiencing no tts playback on incoming calls, minor...my real issue is that I wanted to know is there a way to force sound to a miracast dongle...my videos streams fine, but my audio plays through my handsets speakers..
Device: Lg e980 Optimus g pro (software ver. E98020h)
Android 4.4.2
Programs used during casting; YouTube, system video player, MX player, local video:

Thanks for any help on the situation and I'll continue to support this great
"Built Lord Tuff"