Comment This misses the really important news (Score 1) 535
From the link in TFS
The Extension is based on a Firefox Add-on that parses HTML5 pages and replaces Video tags with a call to the Windows Media Player plug-in so that the content can be played in the browser.
What we need is that add-on, but with calls to VLC instead of WMP. That would make the add-on multiplatform.
It may not be the politically correct thing to wish for, but I'll take anything that replaces crappy Flash video on the OS X version of Firefox.