Airplay no longer working with 3rd party after upgrading to Maverick.

I updated my MacBook Pro this week and I have noticed that the airplay icon is no longer showing up in iTunes to connect to my Denon Amplifier. The interesting thing is that my old iPad 1 that I have that is still running 5.1.1 can connect and play to the receiver just fine.

Was there an update to the airplay software that would affect 3rd party devices? I was not able to find any new updates for my receiver.