title: List of ALL MimeTypes on the Planet, mapped to File Extensions?
body: <p>Is there a resource that lists ALL the mimeTypes in existence?</p>
  
  <p>I have found a few places with under 1000 mimeTypes, but then they still don't include common ones like .rar, .fla, .rb, .docx!</p>
  
  <p>Does anyone have a COMPLETE list of mimetypes?  Not down to the most obsure "company-only" ones, but at least all of the ones we might use.</p>
  
  <p>Also, I'm looking for a list that maps file extensions to mimeTypes.</p>