I'M RUNNING A iMAC LATE 2009 EDITION 27" SCREEN WITH iOS LION ...& I'VE JUST BOUGHT SOUND BLASTER X-Fi HD . ITS VERY EASY TO SET UP JUST PLUG YOUR USB LEAD INTO YOUR MAC & THE SOUND BLASTER X-Fi HD (Black Box) I'VE CONNECTED MY LOGITECH SPEAKERS THROUGH THE .....AUDIO OPTICAL OUT With The...