As I had ripped my albums in dBpoweramp and PerfectTunes, Audirvana on iOS/MacOS accurately displays my album artwork.

As for connecting my 210 to my 218 I simply followed Meridian’s instructions: it works as expected.

Connect 210 SpeakerLink output to 218 SpeakerLink input.

Set 210 to ‘Network’. Set 218 to ‘SLS’.

The 218 is the Controller, with DSPs connected to the 218.

Even so, as you own Roon, why are you even bothering with Audirvana?

Not an Actor, nor married to Jamie-Lee Curtis.

#1: DSP5200SE|DSW.2|218|210|506.2|504
#2: Prime/PSU|SOtM sMS-200 Mini NEO SE|Focal Stellia
#3: Other stuff