Can I play DVDs on my iMac and have the content redirected to the Apple TV device? In other words, can I throw a DVD into my mac and have it appear on the Apple tv? Because the device is wireless, are there any problems with performance? Choppiness, freezing, etc.? Does the Apple TV device interface with the computer (mac) through some kind of LAN connectivity, or do they both use the existing wireless network to connect to each other? In other words, am I going to have to start programming things like WEP keys and SSIDs into the Apple TV to get it to work?