Even if your music collection is not large there are surely several duplicates in there. If you have a phenomenal audio memory you may try to find duplicates yourself, though that would be very hard work. Audio Comparer tool will do it for you. No matter what audio format your songs have, no matter they are perhaps without tags. Audio Comparer doesn't need tags or pay attention to the format. It just listens to your audio files like a human ear and remembers your entire collection. Then the tool can quickly locate similar and duplicate audio files.
Assume you have the same album of your favourite band in MP3 and WMA formats. The only tool that can help you to automatically locate these duplicates is Audio Comparer. The tool will suggest you what duplicate is better to keep and what to remove according to their calculated quality.