This is an OLD issue from much earlier in the thread, but I wanted to post some success I have had in case anyone is still looking for help with DLNA streaming and such.
I am using the TwonkyMedia server and my LG TV finds it, lists the media, and plays everything perfectly. The only hitch is anything with DTS audio will have no sound. Found a great script that will strip the DTS sound and replace with AC3 5.1 surround.
The script is mkvdts2ac3.sh. You have to google it since I don't have enough posts on this forum to link a URL yet...
I just run the script, and in a few minutes the movie is ready to play. Again, just wanted to share...