i wish i could contribute, but i just stumbled over this thread while searching for a free linux alternative as well. unfortunately it seems there is no tool avaiable that does fingerprinting at all?
Why I do not use PerfectTunes for deduplication (although I have used it for AccurateRip verification). These four are supposed matches:* https://www.youtube.com/watch?v=LcLc-8Ay_Ys* Track 1 from https://yithmetal.bandcamp.com/album/demo-3* Track 5 from the same* https://www.youtube.com/watch?v=xVANJYZlbv4And I cannot tweak the selectivity (have not checked the paid version). Its "Certain" functionality (thanks again, Spoon) remedies some of DupeGuruME's stupidness, but I will still use DupeGuruME for speed, as it does not do fingerprinting.
The issue IMHO of allowing a slider of match accuracy is that for anyone with more than a screen full of matches, moving the slider would have unknown effects on other matches. PerfectTUNES allows the quick 'hiding' of matches, which should be used in your instance for those tracks.
Music Duplicate Remover http://www.maniactools.com/soft/music-duplicate-remover/ from ManiacTools [...]It could be an alternative for some users. It is extremely selective