title: TagLib Sharp returning blank artist when mp3 has artist listed
body: <p>When retrieving the artist tag using TagLib Sharp, I've had some issues. Out of my 3000 or so songs, a few hundred had an empty string for the artist. However, in Windows Media Player and Windows Explorer (Under Contributing Artist), they have a listed artist. The following</p>
  
  <pre><code>TagLib.File f = TagLib.File.Create(filepath);
  Console.WriteLine(f.Tag.Performers.Length);
  Console.WriteLine(f.Tag.AlbumArtists.Length);
  </code></pre>
  
  <p>returns</p>
  
  <pre><code>0
  0
  </code></pre>
  
  <p>Has anyone had this problem? I also tried using UltraID3, but the artist names were still blank.</p>