public SoundTest(string str, string str2, string str3)
    {
        int fadeFrame = 600;
        int volume    = 127;

        m = new SoundPlayer(str, SoundPlayer.SOUNDTYPE.BGM);
        m.FadeinSound(fadeFrame, volume);
        AddChild(m);

        m2 = new SoundPlayer(str2, SoundPlayer.SOUNDTYPE.BGS);
        m2.ChangeVolume(volume);
        m2.PlaySound();
        m2.FadeoutSound(fadeFrame);
        AddChild(m2);

        m3 = new SoundPlayer(str3, SoundPlayer.SOUNDTYPE.SE);
        AddChild(m3);

        l          = new Letter();
        l.LocalPos = new Vect(70, 70);
        AddChild(l);

        l2          = new Letter();
        l2.LocalPos = new Vect(70, 110);
        l2.Text     = "0= 一時停止\n 1= パン左へ\n2 = パン右へ\n3 = ボリューム下げる\n4 = ボリューム上げる";
        AddChild(l2);
    }