from the readme:
-by shagrath “Hi there… you will find on this page an experimental upnp media server I’ve written in Java (so you can also use it on Linux), with precious help from MPlayer/MEncoder, FFMpeg,AVISynth eventually, and currently using with my Playstation3…. I was quite fed up with TVersity and others servers I’ve tried as none of them easily supports subtitles and 1080p transcode,as well as any kind of files I want to play without worrying about ps3 compatibility’…Ready to launch and play. No codec packs to install. No folder configuration and pre-parsing or this kind of annoying thing.I’m currently transcoding in real-time and no quality loss, 1080p mkv files. The drawback is the high bitrate your network must support: with the default settings,specific scenes with a lot of details (e.g.: zoom on a newspaper article) can have bitrates near 100mb/s, so gigabit is maybe useful. However, you can limit the bitrate, for wireless 720p playback for example. Check The FAQ!”
links- download http://code.google.com/ps3mediaserver/downloads/list
wiki http://en.wikipedia.org/wiki/PS3_Media_Server