I would like have this extended to saving partial playlist file too.
For example, select songs from playlist editor, then rmb menu would give some "export" function with "copy selected to clipboard|save selected as .txt|save selected as playlist" and latter one you could choose m3u(

/pls/whatever as in saving playlist normally, also checkbox "
- extend [ ] top
- bottom of existing playlist" would be nice to create new playlists from only the best ones from thousands of songs from current playlist.
For copy/paste, I think it would need selection what to copy, just songnames or filepaths?