when you click on MORE under an individual server they are ordered by type (movies,TV.Music,photos,other,playlists), then ordered alpha in that type. though there is bug that they are not alpha ordered within type that will be fixed soon I am told.
They did used to be ordered only alphabetically regardless of type
There has never been any function to reorder them on that MORE page. You can only reorder the way they are pinned.
