DTS Trailers presented in Lossless DTS:X, DTS HD Master Audio (or High Resolution), and traditional DTS lossy 1,536 Kbps.
To playback the MKV files in DTS-HD Master Audio you will need a media player such as Media Player Classic Home Cinema (MPC-HC) or a Media Server such as Plex that can output the Lossless stream via HDMI to an AV Receiver that supports DTS-HD Master Audio. These files have been tested with both MPC-HC and Plex.
To enjoy the MKV files in DTS:X, in addition to the requirements above, your AV Receiver must support DTS:X. If it does not, you will still experience the audio in Lossless DTS-HD Master Audio.