At the bottom of the Setup Source page for the specific source you are setting up you will find a field labeled Zone II Input or Zone II Audio Input. This is where you will assign the analog audio input that you will use for this particular source. The Zone II audio is strictly analog. So, for example, if you are planning to use your DVD player for the main room and Zone II, you will need to connect the DVD player to the AVR using both analog and digital connections, digital for the main room, and analog for Zone II.