Duplicates search should be improved by adding the search of "similar" tracks.
So duplicates could be filtered on tracks having a similar duration, in order to find tracks with blanks added at the beginning or to the end, and other encoding artefacts.
Optionally, when a track in stored in uncompressed format (WAV) and the same track is found in a compressed format (MP3), an switch should be added not o consider these two tracks as duplicates.
An advanced duplicates search function should be added, that considers tracks having similar names, for example "Track" and "Track (Live)".
When two tracks are found that have the same duration, some form of technical analysis should be made to compare them and find their differences. Besides calculating the basic "Audio Analysis" parameters, a correlation of tracks could be made (correlation is a signal processing technique, used in radar decoding).
negopus