Hi there. I currently own an upgraded 24" Early 2008 iMac and am trying to find the best HDMI adapter for it. After some research, I'm not sure whether or not to get a Mini DVI or MiniDisplay adapter. Some forums even talk about needing an audio interface for the sound to play. Despite being a cheap enough purchase, I'd rather just get whatever I need for it in one purchase rather than several. Thank you in advance.