title: Find length in seconds of mp3 in byte array format without third party code
body: <p>I have been searching for an answer to this question, but everything I come across requires something like <code>NAudio</code> or <code>TagLib</code>.</p>
  
  <p>If I have an mp3 converted into a C# byte array, is there a way to get the length of the file in seconds, but without using third party code.</p>