The following mp3 stream plays in vlc but not in amarok

http://www.radiocourtoisie.fr/courtoisie.m3u

trace : 

amarok: BEGIN: void Playlist::PrettyListView::trackActivated(const QModelIndex&) 
amarok:   BEGIN: void Playlist::Actions::play(const QModelIndex&) 
amarok:     BEGIN: void Playlist::Actions::play(quint64, bool) 
amarok:       BEGIN: void EngineController::play(Meta::TrackPtr, uint, bool) 
amarok:         BEGIN: void EngineController::stop(bool, bool) 
amarok:         END__: void EngineController::stop(bool, bool) [Took: 0s] 
amarok:         [EngineController] play: bounded is  QObject(0x0)  current "Flux (http://direct.radiocourtoisie.fr)" 
amarok:         [EngineController] Just a normal, boring track... :-P 
amarok:         BEGIN: void EngineController::playUrl(const KUrl&, uint, bool) 
amarok:           [EngineController] URL:  KUrl("http://direct.radiocourtoisie.fr") "http://direct.radiocourtoisie.fr" 
amarok:           [EngineController] Offset:  0 
amarok:         END__: void EngineController::playUrl(const KUrl&, uint, bool) [Took: 0s] 
amarok:       END__: void EngineController::play(Meta::TrackPtr, uint, bool) [Took: 0.001s] 
amarok:     END__: void Playlist::Actions::play(quint64, bool) [Took: 0.001s] 
amarok:   END__: void Playlist::Actions::play(const QModelIndex&) [Took: 0.001s] 
amarok: END__: void Playlist::PrettyListView::trackActivated(const QModelIndex&) [Took: 0.002s] 

amarok stays on pause even after double-clicking on stream displayed on the playlist