Does the PS3 play mkv/hi-def/h.264/aac 6 ch./karaoke ssa videofiles ?

[afree_account]

Hi,

i use my xbox to watch various videofiles on my TV, but it's growing old,
it can't handle the latest stuff!

What about the ps3 using linux?

Does it run mkv/hi-def/h.264/aac 6 ch./karaoke ssa videofiles ? 

Anyone tried that?

Any framedrops or limitations?

p.s.
Im not interested in streaming video clients like VLC, DLNA or converting.