I'm using AIR 3.01 beta which does not have so many settings. Your settings look OK for AIR and Sound.
I think you probably want to set Foobar to use exclusive mode. I don't use Foobar, but Roon, Tidal and JRiver can all be set to exclusive mode under settings, so I assume Foobar will be the same.
Your sample rates should then be the same and I expect you will lose the ability to alter the sound levels with your PC or play YouTube while Foobar is in use.
I think you probably want to set Foobar to use exclusive mode. I don't use Foobar, but Roon, Tidal and JRiver can all be set to exclusive mode under settings, so I assume Foobar will be the same.
Your sample rates should then be the same and I expect you will lose the ability to alter the sound levels with your PC or play YouTube while Foobar is in use.
Roon -> AIR -> Ethernet -> D220-> KEF Reference 3
