Display Movie Name From www Address With A UI Text?

If I have a movie file playing from one or two possible sources. Either the streaming assets folder or from the web onto a movie texture. If my movie file is addressed something like this:

public string _url = "http://www.unity3d.com/webplayers/Movie/sample.ogg";

In my code top I have something like this to make a reference to my UI Text and the string.

 // Reference to my UI Display Text for Movie Now Playing
     public Text NowPlayingText;
     private string display = "";

And I want to call it with something like this:

 void AddText()
     {
         //display = currentIndex + " : " + clips[currentIndex].name;
         NowPlayingText.text = display;
     }

How can I find out the name of the movie from the web address or address from the streaming assets folder and pass that to the "NowPlayingText.text = display" ??

I commented out the top line as it was copied from a music player script I have been using and not used here.