Currently only non-smart playlists are able to be selected in the “In playlist” filter. for a Smart Playlist.
I assume this may be by design, however, would be great to have.
For example, I have multiple playlists that include the same list of Genre’s that I care about. Would be great to just say “In Playlist: FavoriteGenres”
Reduce duplicate filters in multiple playlists
Less management on the mobile
Currently I use a smart playlist (nsp) in Navidrome (ie subsonic) and import the playlist into Symfonium. Since it is local, the “In Playlist” works.
However, the cool part of Smart Playlists is that they are multi-provider.