An audio player written in c# with .NET and winforms.
Bass.Net
Taglib Sharp
Super M3U (very basic M3U file processor I've written)
MP3, WAV, OGG, WMA, M4A, FLAC, MIDI, and lots of MOD music formats (XM, MOD, etc)
Warning: to play midi files, you will need a soundfont. One is available here
Shuffle
Easy filtering
Playlist management
Visualisation
Tag editor
Global hotkeys
Color scheme editor
Pitch changer
Duplicate finder
Keeping track of how long you listen to songs, providing a list of top artists, tracks, or albums (double click the logo on top-right corner!)
Some areas are still incomplete, such as the global font changer and control design. Updates are in progress.