Play music from desktop

Hi. Im making a system in what you put !play "name of the song" "if its looped" who load the file and play it in the game for you.

this is a Ienumerator.

Code (CSharp):

1. string Rute = System.IO.Directory.GetCurrentDirectory() + "/Example/Music/";
2.        
3.             WWW GetSong = new WWW(Rute+NameFile+".wav");
4.  
5.        
6.             yield return GetSong;
7.         if (_clip != null)
8.         {
9.             _clip.clip = GetSong.GetAudioClip(false, true);
10.             if (loop == "1")
11.             {
12.                 _clip.loop = true;
13.             }
14.             else
15.             {
16.                 _clip.loop = false;
17.             }
18.  
19.         }

I think im failing in what code im should be using. Maybe isnt the correct way to load a file from your computer. If anyone can help me in how to load a audiofile from desktop, not the editor, a path in your computer. Im going to be so happy.