i currently have an MC200 that goes into the g65 and HD621 with lots of other stuff. If i hit the CD source on the MSR i get the MC200.

I assume they are saying i need to attribute a new MSR source button to be the 218 soloos, and also program the 218 with all my other sources so that when they are selected the 218 just passes through the outputs from the G65.

Do you have to use Mconfig to setup 218 - with the (USB - serial) -->(serial - cat) ----> 218 Ethernet input [the same way you upgrade firmware on dsp5200 speakers]

or can you do it with the Sooloos Control:PC program?

G65, HD621, 5x DSP5200SE, MC200.