Originally Posted by HTPC8813
You can use eac3to or TSMuxer to demux the movie and get TrueHD track.
HD-DVD/BR Stream extractor is an eac3to GUI, and I didn't remember tsMuxer extracting mkv-compliant streams... I'll check it out, but I think I'll be all right with ClownBD (thanks both BTW).
Although it turns out that for TrueHD material mkv might not even be necessary, I just tried playing the m2ts directly with MPC-HC and it's working great, decoding TrueHD and letting you choose audio and subs, pretty much the only difference I see is chapters, but if you've got a progress bar that's not a big deal anyway.