Yes, my mistake in writing Audio instead of Aux.

About lemonade, UEI remotes (like Comcast, OneForAll and others) can "keymove" the IR signals from one button to another, including mixing the setup codes, and also sending IR commands which aren't in the Comcast remote as shipped.  So think about if it is practical for you to use the Aux mode to send IR signals to both your BluRay and receiver.  If both of them require the use of the arrow buttons in order to function well, then it probably isn't practical.  My guess is that you'd need the arrow buttons to navigate menus on the BluRay, while you could use discrete codes to select inputs on the receiver.

I like UEI remotes, because the capability to program them (either manually or by using a computer via the 6 pin connector inside the battery compartment) makes them very flexible.  Actually we use Comcast remotes at our house, although I think the RCA RCRP05B ($20) is more versatile-- 5 devices and 8 internally.