Sorry, still cannot get the Loki working right. I ran aplay -L and saw several entries for the device and these also show up in MC19. I figured sysdefault: CARD=device would work but I get an error message saying ALSA cannot deal with the format. When I chose HW or plugin HW, the file began playing but no sound came out and no DSD was detected by the Loki.
On another note, which may be related, I tried to make MC19 the default app but the program does not show up in the list of available applications. Also several times when I selected Device Settings under ALSA the program kicks me out and shuts down completely.
I got MC19 to work with another sound card but then I don't have DSP which is the reason I want to use MC19. I think the problem is with DoP as I see some other posts about problems running DoP.