How could I find sound file length of type that is not a wav. Type .wma will be good

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C#3.0

hello
I am trying to get sound file length, I got the length for wav file using mciSendString
but my goal is for file.wma or other. I am trying using Microsoft.WindowsAPICodePack.Shell
unfortntley i could not added a reference to Microsoft.WindowsAPICodePack.Shell
help me to find the file length in any way you know ,I am looking for several answers
thanks

What I have tried:

//try1
using Microsoft.WindowsAPICodePack.Shell;
        private void FindLengthClick(object sender, EventArgs e)
        {
            double nanoseconds;
            string file = "mac1.wma";
            ShellFile so = ShellFile.FromFilePath(file);
            double.TryParse(so.Properties.System.Media.Duration.Value.ToString(),
                                out nanoseconds);
            MessageBox.Show("File length in MilliSeconds=", (nanoseconds/10000).ToString());
        }
//try 2
using System.Runtime.InteropServices;
    public partial class Form1 : Form
    {
        [DllImport("winmm.dll")]
        private static extern uint mciSendString(
            string command,
            StringBuilder returnValue,
            int returnLength,
            IntPtr winHandle);

        private void button1_Click(object sender, EventArgs e)
        {
            string fileName = "mac1.wma";//"myfile.wav";

            StringBuilder lengthBuf = new StringBuilder(32);
            mciSendString(string.Format("open \"{0}\" type waveaudio alias wave", fileName), null, 0, IntPtr.Zero);
            mciSendString("status wave length", lengthBuf, lengthBuf.Capacity, IntPtr.Zero);
            mciSendString("close wave", null, 0, IntPtr.Zero);
            int length = 0;
            int.TryParse(lengthBuf.ToString(), out length);
            MessageBox.Show("length=" + length.ToString());
        }