I think it would be a good idea to distribute Ps3 media server also as a "portable" application.
Meaning the following:
it would not make any file changes outside it's directory
Would not make any registry changes
Either has a "portable" option in the installer, or is distribute in zip file with no need for installer.
I believe this should not be a problem, as I extracted the application with universal extractor and it ran fine.
Used regfromapp to test whether it made any changes to the registry and it didnt.
I'm not sure whether it wrote any file outside it's directory as I have no way of testing..