Is DLNA a Samsung product? I think that's some industry consortium. Yes it is -> http://www.dlna.org/digital_living/product_types/
So if you put MKV under DLNA then you might lose your certification.
So rather than ask Samsung for this you may want to lobby the dlna.org.
Hope this helps you understand where the lines are.
Ok i have a LE40B658 lcd tv which is a great tv bought it Christmas day 2009. I think the only flaws with it is of course the DLNA feature, its a great idea but needs serious improving. With digital media these days being so popular the software provided for the DLNA is extremly poor especially when running windows 7.I ended up buying twonkymedia instead (offers MKV Streaming) just to be able to stream the movies from my PC.Since I thought that My TV supports MKV Files I streamed to my TV to learn that DLNA does not support MKV which is a real pain.
If Samsung want to give the most to their customers they have to bite the bullet and release firmware for it to support more files especially DTS sound codecs.Otherwise I can see other TV makers getting in first with more file support, hence more people may think twice about things. Time to Relise technology changes often and manafactures need to keep up with the times.
But thanks Samsung for a great TV otherwise, and if anybody has any News if Samsung will deal with these issues would be great to know about.