Universal Media Server is a project forked off of the PS3 Media Server which includes a few enhancements over the original project. The program was designed to enable your Playstation 3 console to playback media formats which were traditionally not supported, the most popular being MKV files.
The main function, apart from being a media server, is to transcode video so that your DLNA-compliant media player can display high-definition movie files without issues.
The main program interface is certainly not pretty, yet it is certainly functional and well laid-out.
Version 6.5.1 is a freeware program which does not have restrictions and it's free so it doesn't cost anything.
Virus and Malware Tests: The program has been tested with several antivirus applications and has tested clean of viruses, malware or trojans.