Download each track’s complete original album through spotidownloader.com. Enter a playlist name filter, or check “All playlists in library” (or use the green button) to include every playlist. Tracks you already have are skipped; albums are still checked for missing tracks. An empty filter does not mean all playlists — enable All playlists for every playlist.
/mnt/bock/Music/musicStaging/
unless you set a different output directory.