c# – 无法使用Monogame 3.2 for Windows 7 Desktop(DirectX)播

如果我通过“原生XNA”运行我的示例,一切正常.

我正在使用：
用于Windows桌面的Monogame 3.2(DirectX)
Windows 7的
Visual Studio Express 2013

例：

SoundEffect effect;
    SoundEffectInstance instance;
    Song song;

    protected override void LoadContent()
    {
        // Load sound,no errors and the objects get filled with data.
        effect = Content.Load<SoundEffect>("myWavFileAsSoundEffect"); // Loaded with ContentProcessor = "Sound Effect - XNA Framework" 
        song = Content.Load<Song>("myWavFileAsSong"); // Loaded with ContentProcessor = "Song - XNA Framework"
        instance = effect.CreateInstance();

        // Set volume to 100%,just in case
        SoundEffect.MasterVolume = 1.0f;
        MediaPlayer.Volume = 1.0f;
        instance.Volume = 1.0f;
    }

    protected override void Update(GameTime gameTime)
    {
        if (Keyboard.GetState().IsKeyDown(Keys.Space))
        {
            // Play instance. Nothing happens.
            instance.Play();

            // Play effect. Nothing happens.
            bool success = effect.Play(1.0f,0.0f,0.0f);
            // success is true

            // Play song.
            try
            {
                // Error
                // HRESULT: [0x80004002],Module: [General],ApiCode: [E_NOINTERFACE/No such interface supported]
                MediaPlayer.Play(song);
            }
            catch (Exception)
            {
                // Play the song again
                // Plays fine
                MediaPlayer.Play(song);
            }
        }


        base.Update(gameTime);
    }

有谁知道什么可能是错的？为什么我不能播放任何SoundEffects或SoundEffectInstances？