Lists of changes:

2010-01-19: Similarity v1.1
 + Major changes in Results view (its now descending with columns)
 + Changes in folder view, added folders reloading, icons support. Possibility to select folder without subfolders
 + Added support for Windows 7 Libraries
 + Portable mode, all data stored in same folder with exe file, use "similarity.exe /portable"
 + Crash gathering and submitting mechanism. Similarity can now ignore minor crashes than decoding some files,
 this files automatically added to skip list and never touched again.
 - Offically doesn't support Windows 2000 now (too old for new features)
 - WavPack memory leak fixed
 - Some small visual/translation bugs fixed

2009-11-20: Similarity v1.0.1
 - slow scanning fixed

2009-11-17: Similarity v1.0.0
 + New tag editor (results tab)
 + Some improvments in comparing algorithm
 + Some visual improvements
 - Many small visual/translation bugs fixed

2009-09-29: Similarity v0.9.360
 + New expermental algorithm (it outperform other algorithms)
 + Czech language added
 - Many small visual/translation bugs fixed

2009-09-03: Similarity v0.9.350
 + MusePack (MPC,MP+,MPP) decoder added 
 + 3 languages added (French,Spanish,Bosnian)
 + license file added
 + 'Shift-space','Ctrl-space' keys works now in results list
 + All cache data now stored in 'APPDATA' (ie. X:\Documents and Settings\[User]\Application Data)
 - Resample bug fixed (only one channel taken from sounds)
 - WavePack decoder fixed

2009-08-26: Similarity v0.9.340
 + German translation added
 + Rewritten FLAC decoder (it now correctly show duration)
 - fixed nasty bug with ACM decoder (that led to crash and not worked at all)
 - fixed bug in comparer (that potentially could miss absolutely identical files)

2009-08-25: Similarity v0.9.335
 + multilanguage support (all phrases are translated)
 - fixed some minor bugs

2009-07-22: Similarity v0.9.330
 + multilanguage support (not all phrases are translated)
 + Similarity can be translated in any language (in this moment english/russian)
 - fixed some errors in tag editor

2009-07-13: Similarity v0.9.320
 + Tag Editor (MP3,WMA)
 + File to Tag, Tag to File renaming
 + some minor changes

2009-06-20: Similarity v0.9.310
 + own resampler, Similarity correctly works with all sample rates in OGG,FLAC,WM,APE now
 + with new resampler Similarity correctly works in Windows 7
 - fixed bug with invalid cache loading
 + ignores stored in "ignores.list" text file, not in cache
 + separate sensivity for tags and content
 - changed scores calculation mechanism
 - fixed bug with incorrect audio files, that showed them as similar to every file

2009-06-06: Similarity v0.9.300
 - new GUI design (major GUI changes)
 - acm decoder now support ID3v2 tags (as WMF decoder)
 - working threads can be stopped or paused
 - integrated tag editing mechanism (not yet completed)
 - integrated crash logging mechanism
 - new installer

2009-05-17: Similarity v0.82
 - changed cache storage, it's now fully unicode
 - you can now ignore pairs, they never showed again in list (ignores info stored in cache)
 - corrected compatibility with screen resolution less 32bit
 - fixed some issues with invalid flac's
 - changed % showing mechanism, if sounds don't similar by some algorithm they doesn't shown with 0%
 - changed progress updating mechanics

2009-05-09: Similarity v0.81
 - added ogg support
 - acm decoder info corrected
 - window position stored
 - issue with utf-8 tags in flac fixed

2009-05-05: Similarity v0.8
 - visual improvements
 - user interface improvements
 - some bugs fixed
 - fixed vista uac problems (cache.dat moved to 'appdata')

2009-02-04: Similarity v0.71
 - FLAC decoder correction

2008-07-04: Similarity v0.7
 - suport APE,FLAC,WV
 - decoders dll's
 - decoders API
 - new experemental algorithm
 - installer support
 - some minor visual changes

2008-02-01: Similarity v0.62
 - marked delete

2008-01-31: Similarity v0.61
 - minor UI and usability changes

2008-01-06: Similarity v0.6
 - UI changes
 - detail window
 - changed folder and cache work

2007-09-29: Similarity v0.51
 - multicore speed improved
 - the experimental algorithm is made postponed

2007-09-28: Similarity v0.5
 - new experimental algorithm

2007-09-10: Similarity v0.4
 - new decoder added: Windows Media Format 9.0 SDK (supported formats MP3,WMA,ASF)
 - double click on a file opens default player
 - parsing of ID3v2.x/ASF tags is added

2007-09-03: Similarity v0.32
 - visual bugs fixed (Vista)
 - pre-version 0.5 check update

2007-08-23: Similarity v0.31
 - improved content comparing engine

2007-08-14: Similarity v0.3
 - fixed bug: thread pool not stop then application closed
 - added id3 tags comparing

2007-07-26: Similarity v0.2
 - first release