public class ProvaMP3 { 
  public static void main (String[] args) {
     MP3 m = new MP3("Come Together", "Beatles", 600, "cometogether.mp3");
     System.out.println(m.toString());
     m.aggiornaFile(500,"cmtgthr.mp3");
     System.out.println(m.toString());
     System.out.println("Brano: "+m.getTitolo() + ", " + m.getArtista() +
                         ", " + m.getDimensione() + ", " + m.getNomeFile());
  } 
}