WAV DTS Audio Tough Intel i5 HDMI

Hi all,

Running on Kodi 17 RC i am not able to play WAV DTS music audio on this system.
If i play MKV with video i’m able to play DTS and HD Masteraudio.

All drivers are up to date but dont know why it is not working. On my Dell Optiplex 7040 Micro i5 / SSD Windows 10 home.
Connected trough HDMI to my Sony ES receiver.

I already seached for solutions but unable to find them.