The AllShare is a feature for Samsung phones and devices to work through the current network.
I think what you're looking for is this list, which lists out the different containers and extensions available.
Does that help?
I normally use TVersity Media Server as my DLNA compliant media server. I generally stream DIVX, XVID, and H.264 (in an MKV wrapper) content. Which of those formats will my UNC6500 support without transcoding?