You could also try the following: Quoting AndrewT:
...then open its (FlashVideoReplacer) preferences window. Change Replace Method to Embedded, change Quality to Medium or Low, and change Plugin/Mimetype to WMP (application/x-mplayer2). Then embedded Totem will work, with a few disadvantages (no skipping ahead in the video, no replays, video has to be in fullscreen mode to view its length).
