Plarpebu is a java karaoke player that runs on any architecture that can run java. It plays both midi (.mid and .kar) and mp3+cdg files. Check project web site at : http://miageprojet.unice.fr/twiki/bin/view/Fun/ScreenshotsPage for full info.
Rockola Music Player es un programa para escuchar ficheros de audio (principalmente MP3) escrito en J2ME para telefonos moviles. Caracteristicas: facil uso, no requiere listas de reproduccion, e interfaz grafica simple para un menor consumo de la bateria
JukeX is a flexible jukebox system written entirely in Java. It is object oriented, and has flexible metadata support for the tracks, as well as a full API for developing custom client software to use it.