Support for Mp3 Filter is available from the publisher site.
Short description: Mp3 Filter is designed to find duplicates in your music collection, wherever your collection is: Hard drives, Multiple Mp3 CDs, anything. The file comparison process, which basically compare filename's words between them, is completely customizable....
To speed up your downloads we recommend you use a download manager such as 
Melomania is a handy music collection software for Windows, which allows you to catalog music collection of any kind, from vinyls to MP3s, and provides you with a quantity of facilities to manage music database.
EZlib is a Free MP3 Music Library/Playlist Manager featuring custom-query on 14 ID3v2 tag fields and file dates; single and mass ID3v2 Tag updating; 4 user-defined custom ID3v2 fields; add/delete pictures; runtime playlist tweaking; automatic lyrics
Tag archiving utility for MP3s and other digital audio files. Backup and restore data to and from MS Acess 2000 database files, Excel worksheets, or delimited text files.
WinMPG Video Convert is a best video converter. Convert between AVI, Mpeg, Mpeg1, Mpeg2, Mpeg4, VCD, SVCD, DVD, RMVB, RM, DivX, ASF and QuickTime MOV.
MKV to AVI Converter includes a powerful video converter which can convert MKV to AVI, convert MKV to DivX or XviD. Convert other video formats MPEG, MPG, ASF, WMV, VCD, SVCD, DAT to avi file also. MKV to AVI is also an MKV splitter and MKV editor.
egrID3 COM Add-In for Microsoft Excel adds functionality to fast mp3 ID3 v1.x, v2.3, v2.4 tag reading and altering, playlists generation, FreeDB querying, file names handling and full Unicode support on all operations. Handle compressed v2.x frames.