Mp3 filter is the old name dupeGuru Music Edition had before version 5.0. Thus, if you want the latest version of Mp3 Filter, download dupeGuru ME.
Please note that registration keys for Mp3 Filter and dupeGuru ME are completely interchangeable. Thus, if you bought Mp3 Filter, your key works for dupeGuru ME, and when you buy dupeGuru ME, your key works for Mp3 Filter.