I'd loved the structure explained by pety
here in this thread, but that doesn't work completely anymore.
So, I have choosen the setup with Voicemeeter and set the options how it's explained. All works fine - with exception of one thing: the Skype caller doesn't hear the music. Only my voice, that's it. (In previous versions of RB before 5.5 it worked fine.)
How to fix?
I don't like to use integrated VB Audio cable, because I don't want to handle with a line input/output.