JuK is a free software audio player by KDE, the default player since K Desktop Environment 3.2. JuK supports collections of MP3, Ogg Vorbis, and FLAC audio files.
JuK was started by Scott Wheeler in 2000, and was originally called QTagger; however, it was not until 2002 that the application was moved into KDE CVS, where it has grown into a mature audio application. It was first officially part of KDE in KDE 3.2.
Read more about JuK: Features