Kodi 17.0 looses audio

Installed Kodi 17 on Windows 7. Hardware is a homebrew AMD board, no video card, SSD, hardwaired 100 Mb Ethernet Very smooth ! Installed the HDomeRun Add-on, also very smooth.

After watching about 5 minutes of TV, the audio just goes away. Video is running smooth.

Stopping Kodi and restarting on the same channel produces the same results.

How do I get Kodi to run in less than full screen so I can check so performance issues on the rest of the system ?