Me too, I finally got the unit installed and figured out how to hear music (Roon setup doh). Many thanks to Ian at Martins Hifi for his patience.

Can anyone help though with how to switch sources?

I only have the 218 plugged directly into a G57, and my TV into the 218 but I cannot switch between them? im using Roon.

Should I also connect a link wire between the 218 and G57, is that the problem?

always changing