qt 用 QProcess 類啓動 mplayer

void myplayer::btnClicked()
 {                         
     qDebug("btnClicked()");
     //QString program = "tar";
     QString program = "mplayer";
     QStringList arguments;
     //arguments << "czvf" << "backup.tar.gz" << "./*";                                                                                                             
    arguments << "./0.mp3";
     QProcess *myProcess = new QProcess(this);
 }