Well, I mentioned that I am using the newest iMac available (27 inch late 2013). On this one Arcana works, not on the older ones. It did not work on my old iMac (2008). And why to get rid of the startup noise? It is just too loud. I used to be reluctant to start my Mac early in the morning (4 am) when my neighbors are still asleep. Also I don't find the startup noise sexy in any way, just shocking. And turning down the volume or plugging in headphones does not work at all. And I like to shut my Mac down when I am out of my home for more than a few hours to avoid wasting energy and polluting my environment unnecessary. Well, unnecessary loud noise is acoustic pollution, right? Life without the Apple's startup noise is like paradise, just the beach is missing.....