Probleme de lancement Tuxguitar sous mandriva

Bonjour,
j'ai un probleme lorsque j'essaye de lancer tuxguitar sur mon PC j'obtiens ca :

[root@localhost regis]# tuxguitar
Exception in thread "main" java.lang.RuntimeException: Not implemented.
at com.sun.media.sound.JDK13Services.getProviders(JDK13Services.java:57)
at javax.sound.midi.MidiSystem.getProviders(MidiSystem.java:1462)
at javax.sound.midi.MidiSystem.getMidiDeviceProviders(MidiSystem.java:1059)
at javax.sound.midi.MidiSystem.getDefaultDevice(MidiSystem.java:1111)
at javax.sound.midi.MidiSystem.getDefaultDeviceWrapper(MidiSystem.java:1094)
at javax.sound.midi.MidiSystem.getSynthesizer(MidiSystem.java:325)
at org.herac.tuxguitar.player.impl.MidiPlayerImpl.getSynthesizer(Unknown Source)
at org.herac.tuxguitar.player.impl.MidiPlayerImpl.init(Unknown Source)
at org.herac.tuxguitar.player.impl.MidiPlayerImpl.<init>(Unknown Source)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:539)
at java.lang.Class.newInstance0(Class.java:373)
at java.lang.Class.newInstance(Class.java:326)
at org.herac.tuxguitar.gui.util.ClassLoaderUtil.newInstance(Unknown Source)
at org.herac.tuxguitar.gui.util.ClassLoaderUtil.newInstance(Unknown Source)
at org.herac.tuxguitar.gui.TuxGuitar.initPlayer(Unknown Source)
at org.herac.tuxguitar.gui.TuxGuitar.displayGUI(Unknown Source)
at org.herac.tuxguitar.gui.TuxGuitar.main(Unknown Source)

je n'y comprends rien ?? est ce que quelqu'un peut m'aider svp

Merci

Configuration: Linux Mandriva 2008
Firefox 2.0.0.13