lnkMusic is a powerful and easy-to-use interface
for MPD (Music Player Daemon). It features
playlist sorting and a system tray item that lets
you control MPD without having to open the main
window. The tag browser is similar to the one in
amarok with an integrated search engine.
Stealthsound is an audio converter written with
Gambas. It supports tag editing/guessing, and has
a plugin system to make it support more audio file
formats. Currently, it supports MP3 decoding and
Ogg/WAV encoding, but other plugins are on the way.