1)   EF Duplicate MP3 Finder 4.20
The EF Duplicate MP3 Finder is a useful program that help you to find out and remove duplicate audio files with same or similar properties. Support the audio formats MP3, Ogg/Vorbis, FLAC and WMA. Multilingual. Shareware

 2)   Abee MP3 Duplicates Finder 2.1
The purpose of this program is to find all mp3(ogg,wma) duplicates on your computer and remove useless files from your hard drive. As this program performs just this single task it copes with it much better than other more universal programs.