It stutters with almost every file (bar the lowest of lowest resolutions). This happens with media player and with Mplayer.
The media player is extremely picky, not only about file types but even about pixel numbers.
Movies take an amazing time to start up.
Both media player and Mplayer will randomly hang for no apparent reason.
Neither player has a convenient way of resuming a stopped movie (my PMA has video bookmarking feature, and that's two years old!).
In short: The multimedia part of the device behaves as something that was designed ten years ago.