Thx for that.
It nearly works, but the music I received is corrupted and with less quality - but I will try it further on.
Nevertheless even with perfect results I conclude all in all that this procedure to play URL streams via Musicbee ASX files seems to be very cumbersome and complex - I would have thought that there are easier solutions like "Copy & Paste" etc in place - especially for users like me without big IT background.
I am wondering, why there are those massive technical restrictions - there must be thousands of music listeners which are using both worlds (music streaming + MP3 on PC). The question how to manage both worlds the best way cannot only be answered by using 2 different players with separated libraries, playlists, tags etc.
Perhaps I am too naive, but maybe there are some juristical issues to consider - which I don't see currently. I paid for my mp3 files and I paid monthly for the streaming - so I paid for the music and not for the platform to use for listening. My impression is, that exactly this unique platform for managing both doesn't exist - and if so, this would be a great feature for MB as well.
Interesting discussion, by the way ...