Full Audio and Video Codec TV DLNA?

Hey I have a LG LE4900 in my bedroom and it does an amazing job at taking media.

But it does not like MKV or DTS files, My AC Ryan will take all this and its a tiny tiny box.

Surley there is a TV that can do this, as the board on the AC RYAN is so small, why cant they have something like this in a TV?

What I am asking is... Is there a TV that will stream and decode all media from a PC or NAS like a media streamer, and if not.. why not, surley its do-able

Thanks