• LyricFX for WinAmp

LyricsFX is a visualization plug-in for Winamp that can automatically search for lyrics, matching the currently playing song. It searches a large selection of lyrics sites (customizable) and includes a lyrics editor, as well as line highlighting, beat detection and integrated visualization display (optional). LyricFX also supports lyrics that are embedded in ID3v2 and Lyrics3 tags.

You may download it here

• Mp3ListShellEx

Mp3ListShellEx is a small program, which ads "Create mp3 list" to the Window Explorer context menu and allows to easy build many types of playlists and mp3- file lists based on ID3 tags and MPEG frames information. Currently Mp3ListShellEx creates Media Player (.asx) and Winamp (.bpl, .m3u, .pls) playlists. In addition, supported list formats also include Excel tables (.xls, .csv) and Web documents (.htm, .xml). Program settings such as output path and list name, additional mp3-file data, their order and others may be customized. You may download it here

• Sitex MP3-Finder

MP3-finder is specifically designed utility for fast and easy mp3 files searching on your computer and local network. You can simply scan for all files in a selected drive/folder or search for specific information contained in the ID3 tag. The results can be sorted, exported to .csv. In addition, you can play the found files in WinAmp, create a WinAmp playlist and edit ID3 tag information.

You may download it here

• MP3Gain

MP3Gain analyzes and adjusts mp3 files so that they have the same volume. The program does not just do peak normalization, as many normalizers do, but instead attempts statistical analysis to determine how loud the file actually sounds to the human ear. The changes MP3Gain makes are completely lossless, there is no quality lost in the change because the program adjusts the mp3 file directly, without decoding and re-encoding.  You may download it here