Nuget package reference (WMPLib) not recognized in code

I try to add the WMPLib nuget package as a package reference to my project, but in the code the classes are not recognized.

Here I read that "the issue is due to the new NuGet format reference 'PackageReference' ... the folders and files aren't added".

Does someone know more about this? And is the solution using a package.config instead of a package reference?