Hi there - I have the End of The Innocence by Don Henley DTS-CD and can confirm that the first track, and only the first, is a DTS-ES file. This is stated on the back cover.
This means it is a 6.1 file (I can't remember if it is DTS ES matrix or discrete, however. I would be 99% certain that due to the bitrate restriction of a CDDA disc holding a 44.1 DTS file, it will be matrixed)
I transcoded the 44.1 / 24 bit files from DTS to FLAC (They are all 5.1 EXCEPT track one where I wanted a 7.1 file)
I used EAC3to to do this.
My Oppo BDP-105 EU would not play the 7.1 FLAC file, despite me trying many, many times to convert it used dBPoweramp, JRIver, EAC3to.
Because I do not have a single other 7.1 audio file, I seem to recall upconverting a different 5.1 track to a 7.1 FLAC just to test 7.1 FLAC playback and it failed to play.
Eventually I gave up and simply left it as a 7.1 WAV file where the rest of the album is 5.1 FLAC. (I spent a few hours scratching my head on this one track!!!!)
I figure now that even if JRiver plays 7.1 FLAC (I haven't tested), for compatibility, the PCM WAV file is better!
Mark