Settings after clean install of Win10Pro

Hello,
I have successfully installed Win 10 PRO and all supplyed drivers.

All seems to work OK, except for soundcard powersave.
When the screen goes blank, playback (mp3, movie...) continues, but sound goes mute.
It seems that screen off switches off also soundcard. How can I change this?
I'd like to listen to my audiobooks without screen shining on me in my bed. I don't know if it is an issue with original system image, I haven't tested the preinstalled W10Home.
Thanks :-)

Sound card driver
https://mega.nz/#!wA5BmLoK!0tN6fbNdXn4mHGVICE4bR8q2_cZ0HYATcCPYP01icyc

Install the driver

In the end it seems to be Win10 "feature". Only "Universal apps" are able to pllay with screen off :-(