Sound transmission on optics and HDMI

[Ichigo]

Hello, unfortunatelly it is not possible. You might want to check the following thread for more information. 

http://community.wd.com/t5/WD-TV-Live-Hub-Discussions/Important-WDTV-HDMI-HDCP-Video-Audio-Output-Simultaneously/m-p/360893#M18042