Been a while, nearly there. Got the firewall down. So hopefully can better share music and videos.

Port Forwarding did it. The threads and instructions helped but so many anomolies and significant differences for my computer and router set up. Had to interpret and persevere.

Managed to put some music and videos in library too. But not using LW app.
Had to put files on desktop (duplicates when not wanting to move originals (important especially for iTunes). Then open Finder and drag the desktop files to my LW folder there. The files then appear in red in LW library (and stay red). It was then nescessary to select each file, right (control) click and select "share file" from menu.

Now all I would like is to find a thread (been looking) or instruction to put playlists in library instead of just single song files. Is it possible? - Anyone!
Yes or no would do.

Thanks to Wondering Why for answering initially.