FlagSync is a synchronization and backup tool, which allows you to synchronize or backup your files with local folders (or an extern harddrive or flashdrive) and FTP-Servers, as well as synchronize your non-iPod MP3-Player with iTunes.
The sourcecode is currently hosted at http://github.com/flagbug/FlagSync
Metadata Backup, originally written by Dale Preston, is a tool for backing up and restoring all the information in the Windows Media Player library, including ratings, play counts, and custom fields.
Fire is a file renaming tool written in C#. It allows users to rename multiple files at once based on a list of regular expressions. Also allows batch editing of MP3 ID3 tags. Includes embedded Windows Media Player and picture viewer.