C#MP3文件播放操作

/// <summary>
/// MP3文件播放操作辅助类
/// </summary>
public class MP3Helper
{
[DllImport("winmm.dll")]
private static extern long mciSendString(string strCommand, System.Text.StringBuilder strReturn, int iReturnLength, IntPtr hwndCallback);

public static void Play(string MP3_FileName,bool Repeat)
{
mciSendString("open \"" + MP3_FileName + "\" type mpegvideo alias MediaFile", null, 0, IntPtr.Zero);
mciSendString("play MediaFile" + (Repeat ? " repeat" :String.Empty), null, 0, IntPtr.Zero);
}
public static void Play(byte[] MP3_EmbeddedResource, bool Repeat)
{
extractResource(MP3_EmbeddedResource, Path.GetTempPath() + "resource.tmp");
mciSendString("open \"" + Path.GetTempPath() + "resource.tmp" + "\" type mpegvideo alias MediaFile", null, 0, IntPtr.Zero);
mciSendString("play MediaFile" + (Repeat ? " repeat" : String.Empty), null, 0, IntPtr.Zero);
}

public static void Pause()
{
mciSendString("stop MediaFile", null, 0, IntPtr.Zero);
}

public static void Stop()
{
mciSendString("close MediaFile", null, 0, IntPtr.Zero);
}

private static void extractResource(byte[] res,string filePath)
{
FileStream fs;
BinaryWriter bw;

if (!File.Exists(filePath))
{
fs = new FileStream(filePath, FileMode.OpenOrCreate);
bw = new BinaryWriter(fs);

foreach (byte b in res)
bw.Write(b);

bw.Close();
fs.Close();
}
}
}