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unit test.mp3;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, MPlayer;

type
  TForm11 = class(TForm)
    MediaPlayer1: TMediaPlayer;
  private
    { Private-Deklarationen }
  public
    { Public-Deklarationen }
  end;

var
  Form11: TForm11;

implementation

{$R *.dfm}

end.					

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procedure TForm1.PlayMusicClick(Sender: TObject);
begin
  if OpenDialog1.Execute then
    begin
    mediaplayer1.FileName := Opendialog1.FileName;
    mediaplayer1.Open;
    mediaplayer1.Play;
    mediaplayer1.Play;
    end;
end;