voodoohda and hdmi audio

Hi there, I could not get a single audio device to show up, so I tried installing VoodooHDA and voila my audio through the headphones work perfectly fine. However, I do not get any audio through either of the 3 HDMI output devices displayed. Can someone point me to how to get audio working across the board?

My setup is :
Asus Prime Z370-a
i7 8700
2x 8GB Corsair Vengeance 2600Mhz
samsung SSD to boot
Ethernet network

Cheers & TIA