Just for you, I updated my screenshot and post to include an X11 forwarded Firefox 3.0.10 on Ubuntu 9.04 with plug-in from ubuntu-restricted-extras. Playback on N8x0 tablets does appear broken though. I initially expected it to just be due to Media Player's poor ASX parser, but even when fed the true, extracted, MMS URL for a stream, Media Player chokes on the codec.