I'm trying to follow these instructions on configuring QuickTime so I can use a browser-based web app that uses QuickTime as a plugin in FireFox: http://tones.wolfram.com/tsfaqs/osx/configurequicktime.html
I'm using QuickTime Player version 10.4 (833.1). The instructions I'm reading clearly indicate that QuickTime Player should have a Preferences option in its menu bar, as shown in this picture:
However, my version of QuickTime Player does not seem to have any preferences whatsoever:
How do I change QuickTime settings using QuickTime Player 10.4?