Hello sæn,
First check that the latest iTunes version is installed on the PC, which will help to ensure the latest fixes/improvements are applied: Update to the latest version of iTunes - Apple Support
After that, check for any VPNs, security software, networking software, etc., and try temporarily uninstalling them. This will just help to rule out any conflicts there.
This page will also help to provide various suggestions for that type of issue: If you have problems playing music in iTunes on PC - Apple Support
As the timer doesn't appear to move, the "If you can’t play a song" section there will have the applicable steps.
Cheers.