How to get Zone 2 to play the same thing as main zone on Integra DTR9,9

I have an Integra DTR 9.9 that I absolutely love.  I have a 7.1 system in the media room.  I also have a set of in-ceiling Revel speakers in the kitchen.  I would like to be able to listen to the same thing in both rooms.  I have an Integra 2 channel amp that I am not using at the moment.
My question is:  how can I use the 2 channel amp, or configure the DTR so that I can listen to my music throughout the house?