You'll find what you're looking for here: http://www.ps3news.com/forums/ps3-gu...ps3-99031.html
btw yes i'm sure there are linux equivalents to all the process that will work on fedora core.
btw fedora = linux
linux not = unix
linux = unix-like
if you're really serious about getting this running on fedora core let me know, i'll see what i can do for you whether you're refering to playing the mkv's via linux installed on the ps3 or making them ps3 playable on a normal pc via fedora core.
hmm that actually sounds like a good tut, i think i'll do it when i get time, if u need it though, i'll make an effort to get it done faster