Thank you, edmund, you rock.

I can now control most of my Sony Receiver, although I'll have to use up the 4 learning buttons on switching inputs, unless anyone has pointers on that? Is there any way I can move a "taught" function up to one of the regular buttons, or switch the function of one button to another? From the manual, it looks like all I can do is map the function of a button from a different component.

I'm also still looking for suggestions on the Apex AD-500A, although I'm not holding out much hope. Does anyone have experience with shipping the remote back to UEIC for an upgrade?