MP3 Boss
MP3Boss Music Database and Manager program - easily manage your song files. Great MP3 Database and Manager! Integrated support for WinAmp, auto-scans ID3/ID3v2/Lyrics tags, full search/sort/filter, and mp3 file management. More!
http://www.mp3-boss.com/

Disk Recon
See how your disk space is being used throughout the folders, find files fast according to your criteria
http://www.blacksunsoftware.com/diskrecon.html

FileMonkey
FileMonkey automates common time consuming file operations. FileMonkey can copy, move, split, search, replace, rename, alter case, list or delete duplicates, trim, truncate, crop, chop, set attributes, encypt, decrypt, wipe, delete, extract and more.
http://www.monkeyjob.com/FileMonk.htm

Real File Tools
A collection of file and disk management software for Windows. Includes backup, disk cleanup, compare, zip tools, file managers, recovery, rename, replace, file search and other related categories.
http://www.realfiletools.com

Web-Instan
Offers file management, news portal and file directory management tools. Demonstration available. [Commercial]
http://www.web-instan.com/

FileWrangler
A Windows file manager which includes zip/unzip, multiple file list windows, file contents viewer, file patch maker, text and html editors, split files between disks, file encryption, and much more.
http://www.cursorarts.com/ca_fw.html

Drag and File Gold
A full-featured shareware file management utility that supports FTP and includes drag and zip, and a ZIP management utility. Handles TAR, GZ, MIME, UUencoded and Xxencoded files.
http://www.canyonsw.com/dnf.htm

Logipole
Sharewares for the Internet, graphism, file management etc...
http://www.logipole.com/indexe.html

FileUtilX
Contains objects that provides file manipulation functions such as file monitoring, file and directory enumeration, disk space queries, splitting large files into multiple smaller files, file copies, and file moves. By Mckisic Software, Inc. [Control, Commercial]
http://www.mckisicsoftware.com/FileUtilX/FileUtilX.htm

Minis
Minis is a tool to build your own mp3 database. With 3 steps you can add you mp3 files in harddisk or CD-ROM to the built-in database.
http://www.geocities.com/minisload/