I did not know that the built-in media player uses hardware acceleration because I rarely use it. The videos that do work in the built-in player do not run any better than in Mplayer with SiB and the flv videos do not work at all in the built-in player. I hope that Nokia will make improvements to the media player to improve performance and hopefully a codec will be released to bring flv support because I have lots of flv videos. As for VLC, I look forward to trying it and hope that it supports hardware acceleration.