title: How to read audio (mp3) tags (Duration and Subtitle), when I use TagLib?
body: <p>I am using TagLib (UltraID3Lib couldn't read every MP3 file). Maybe TagLib will do.
  And I couldn't find properties like Subtitle or Duration or Time?</p>
  
  <p>How do I find this kind of tags? </p>
  
  <p>Example:
  "Ondertitel" means Subtitle</p>
  
  <p><img src="https://i.stack.imgur.com/kIyNr.png" alt="enter image description here">
  <strong>The second question is:
  And how can I find the tag Subtitle by using TagLib?</strong></p>