@edsnipered - you have not confirmed the exact model of the receiver you are using. If you are using the Sony STR-DN1040, then there is only one way to connect it to the McCormack amp. You have to use the Zone 2 outputs on the back of the receiver. Use a standard RCA cable to connect the Zone 2 output to the McCormack inputs. You then have to use Zone 2 controls on the remote to select the input source (cd / dvd / etc). This will work for stereo signals. However, you will have a problem if you try to use this with the main center/surround speaker outputs on home theater programs because I suspect the entire audio may be mixed down to 2-channel audio on the Zone 2 outputs.
Read pages 88-89 of the Sony manual.
