Plex is a great music media player, but it is not an iTunes replacement at this point yet. Hopefully the devs are continuing to add features that will allow Plex’ smart playlists to be more versatile, or even manageable to a point. Right now Plex’ smart playlists are built by the filters you place onto your music library. Once you create that playlist, the playlist itself cannot be changed. It can only be recreated. The playlists do work as intended though. I have a playlist that includes all tracks added in the last two weeks that have a play count of zero. Not sure when the play count is added to the track, but I am having good success not hearing the same song twice.
To answer your question, I am not exactly sure what your objective is. Can you elaborate on what you are trying to accomplish so someone can assist with the creation of a smart playlist.
