LameXP - LameXP is an Audio Encoder Front-End, a graphical user-interface for a number of audio encoders.
Sidekick Browser - The fastest browser for work ever made
SoundConverter - The sound conversion application for the GNOME environment.
fre:ac - fre:ac is a audio converter and CD extractor designed for Microsoft Windows, Mac OS and Linux, distributed under the GNU General Public License.
Lacona - Fast, simple, powerful keyboard-driven commands for Mac
XRECODE - XRECODE can convert multiple audio files in parallel by taking full advantage of multi-core CPU.