Hi @llfeguard !
You can't move local files into public playlists. This feature is gone since over a half year.^^
But you can still add local files to Spotify. Go into the settings and under "Local Files" you can import the source folder that contains the local files.
Hey there you,
Yeah, you! 😁
Welcome - we're glad you joined the Spotify Community!
While you here, let's have a fun game…