Same here switched it on and it's on the menu and just downloaded. I take it that some audio formats don't play like DTS or AAC? Unless it's because I have it plugged into a normal monitor atm? It just says audio not supported and there is just a dash under audio codec.
I'm running plex server. It's picked up the dlna but audio is not DTS for me either. It's coming out as acc. I don't think DTS works as if I try native and not transcoded audio via plex I get no sound via DTS encoded mkv files... Hmmm so yep not quite a full media solution but its moving in the right direction...