Upon reading this thread, I went out to my theater to see if my 586 (.1 version) would pass a DTS signal. When I put a DTS music disc in, my 568.1 locked on a DTS signal and the display read DTS Music. However, when I placed a DTS movie track in the 586, the processor locked on Trifield and was silent. I cannot explain why it would read a DTS music disc but not a movie track.

Meridian system: G68ADV, DSP6K, DSP5500C, DSP5K, Oppo BDP-95, Sonos