Echoview Pro
EchoView Pro is designed to provide the functions that your music sequencer software left out. If you are a serious musician or composer, EchoView Pro gives you a powerful set of tools that can help you to fine-tune your art. Here is an overview of some of the features... ... A SAMPLE CALCULATOR makes it easy to obtain accurate information about digital sampling situations and optimising sample loop lengths for sound quality and memory efficiency. ... A TAP TEMPO UTILITY lets you find the tempo of an existing piece of music (even one you only have in your head).
http://www.mirage-avm.com/download/evp600.exe - 2Mb - Download - Screenshot

File and mp3 tag renamer
File And MP3 Tag Renamer is a powerful, easy-to-use multiple file and mp3 renaming utility. With this powerful program ,you can quickly and easily batch rename files and mp3's with a number of possibilities and options, including change case, change the file extension, insert string,delete... File And MP3 Tag Renamer is especially useful for handling large amounts of archives, such as image(or picture) collectors,composer, digital camera owners & media collectors(music/images/movies),programmers,webmasters & system administrators.
http://www.123renamer.com/download/123renamersetup.exe - 768b - Download - Screenshot

Media Catalog Studio Lite
Is your video and music file collection growing out of control, making it impossible to find anything? Fight this problem with Media Catalog Studio, a handy software application for classifying and tracking media files. This database is capable of identifying media files on any storage devices -... The best thing about this database is that it allows users to enter all essential information about music file - track number, name of the music piece, name of the author, album, year of release, commentary, composer, mood, genre, rating and so on.
http://www.maniactools.com/cgi-bin/download/media_catalog_studio.exe - 3Mb - Download - Screenshot