I have an older iMac with a mini DVI port and a Hitachi HDTV. What the easiest/cheapest way to hook up my iMac to the TV? I want to be able to watch avi videos and photo slide shows on my TV. Would a simple mini DVI to HDMI cable do? Would I get sound with that? Or is it easier to jailbreak an Apple TV? Any other options? Thanks so much!