You can do it with scripts, see "mark-with-restrictions.js" and "automark-ex.js", first can marks same album and second marks by specific filename pattern.
Hey Guys, new to the forum - this may have come up before, just wondering what the best way of keeping duplicates that only exist in different albums and getting rid of duplicates that are not in an album (exact same songs that exist in the same folder or are prefixed - ie. song.mp3, song(1).mp3, song(2).mp3