Stop rpApple remote from affecting vol.

Hi,

I am running XBMC on my Mac Mini, and have an irritating issue which I could use some help on;

Everytime I use my Apple remote to control XBMC, and I use the up/down keys, the Mac Mini thinks I am trying to turnup/down the volume, and the little volume icon shows up on screen. I have sound out set to HDMI only.

Is there a way to avoid the attempt to control volume?

Bo