Thanks for your reply.

I've found a way to make it work.

I mapped the default behavior in Hardware for the Apple Remote Held Menu to the Apple A keypress I defined in an action pack.

It's not ideal, but I retain the use of the rest of the buttons for iTunes. It may cause complications using the remote for other applications, but if I'm using the mini for other tasks I usually need to pull out the mouse and keyboard anyway.

Being able to map to Menu Held in Mapping would be 
a plus for me, definitely preferable to a global mapping. But I am very happy.

Thank You

Regards 
William