Wrote a guide for how to install it on debianhttp://buffis.com/?p=27
Works quite nice, but I'm not sure that I like the interface. I might start a fork just for the PS3 since it's open source and all.
Also, I have NOT written the code for the media center. I have not ported it either, I've simply installed it and it works fine. Thought some people might want to know that it works
Most common releases work fullspeed (divx, xvid and so on), but videos with 720p resolution or similar will not work (or rather have insane amounts of lag) since no SPE is used. This is a limitation by mplayer and will work when someone optimizes mplayer for the CELL.
Have fun \o/