BackgroundWorker process for Windows Media Player

我需要一些帮助来为Windows Media Player音频设置BackgroundWorker进程。我需要直接从BackgroundWorker运行音频（WMP），而不是从主线程运行，并且后台进程需要保持打开状态，直到音频文件结束，但即使音频在PLAY上开始正常播放，BackgroundWorkers也会停止，因此我不认为音频实际上在第二个线程或BackgroundWorker上播放，因为它已经关闭。

我的问题是，如何使用Windows Media Player（WMPLib）从backgroundWorker播放此音频文件，该文件将一直打开到歌曲结束？

using WMPLib;
namespace mediaplayer
{
    public partial class MainWindow : Window
    {
        BackgroundWorker m_audioProcessingWorker;

        public MainWindow()
        {
            InitializeComponent();            
        }
        string filename = @"C:'audio'song1.mp3"

        private void button_play_Click(object sender, EventArgs e)
        {
           // Create the Audio Processing Worker (Thread)
           m_audioProcessingWorker = new BackgroundWorker();
           m_audioProcessingWorker.DoWork += new DoWorkEventHandler(audioProcessingWorker_DoWork);
           m_audioProcessingWorker.RunWorkerAsync();
           m_audioProcessingWorker.RunWorkerCompleted += new RunWorkerCompletedEventHandler(audioProcessingWorker_Completed);
        }

        private void audioProcessingWorker_DoWork(object sender, DoWorkEventArgs e)
        {
            try
              {
               axWindowsMediaPlayer1.URL = filename;
               axWindowsMediaPlayer1.Ctlcontrols.play();
              }
            catch (Exception ex)
              {
                 MessageBox.Show(ex.Message);
              }
        }
        private void audioProcessingWorker_Completed(object sender, RunWorkerCompletedEventArgs e)
        {
            MessageBox.Show("Audio is finished");
        }

        private void button_stop_Click(object sender, EventArgs e)
        {
            axWindowsMediaPlayer1.Ctlcontrols.stop();
            m_audioProcessingWorker.CancelAsync();
        }
        private void button_pause_Click(object sender, EventArgs e)
        {
            axWindowsMediaPlayer1.Ctlcontrols.pause();
        }

    }
}

谢谢。