If you click a direct link to a media file, Firefox may try to play it in its own tab. This is called the "stand alone" player. To disable the stand-alone player, you can try this: (1) In a new tab, type or paste '''about:config''' in the address bar and press Enter/Return. Click the button promising to be careful or accepting the risk. (2) In the search box above the list, type or paste '''alone''' and pause while the list is filtered (3) Double-click the '''media.play-stand-alone''' preference to switch the value from true to false Does that set Firefox to do what you want it to do?