i actually found something on a different site.
I'm using a BD-C5000 bluray player and I frequently stream MKV videos however what gets me is the Subtitles and language preference features do not work. Yes I did double check and there are srt subtitles in the MKV files. I tested this with about 20 MKV videos and the same happens with all of them.
I am using Samsung PC Share Manager to stream my content from computer to bluray player. I tried streaming through Serviio. Works with MKV but subtitles & language preference isn't working. Tried using PS3 media share however it will not play MKV videos in general.
The very LAST thing I want to do is waste hours or days converting EVERY MKV movie I possess. This shouldn't be necessary if the Samsung BD-C5000 was hyped as a bluray player that can play MKV and subtitles and all of that good stuff so I'm sure there's a way to get this working.