1. From the Options menu, select "General Preferences".
  2. Select the Helpers preference page and click on "Create New Type..."
  3. In the box labeled "Mime Type:", enter "audio" and in the box labeled "Mime Sub Type:", enter "x-pn-realaudio", then click "OK".
  4. Back in the Helper Applications page, enter "ra, ram" in the box labeled "File Extensions:"
  5. In the "Action" portion of the page, select "Launch the Application:" and click "Browse...".
  6. Find the RealAudio player application you just downloaded and click "Open".
  7. Finally, click on "Ok".