title: How can i change AWS S3 content type only for audio files
body: <p>I have above 50000 files ( audio, images, pdf) on AWS S3 bucket.Now i am facing a problem with firefox. Audio file is not playing on firefox because of their content-type. Before it was working well. </p>
  
  <p>Audio file works good when i change the content-type from <em>binary/octet-stream</em> to <em>audio/mpeg</em>.</p>
  
  <p>The default content-type ( binary/octet-stream ) is assigned for all existing files.</p>
  
  <p>I also tried s3 bucket explorer tool but there are no option to change the content-type <strong>specifically for audio files</strong>.</p>
  
  <p><em>how can i change content type only for audio files?</em></p>
  
  <p><em>Is there any example by aws php sdk?</em></p>
  
  <p>Thanks in advance</p>