Hi guys, I have a macmini and am trying to set up my home theater by using it via dual display. I have it hooked up to my monitor (DVI) and have a minidisplay-to-HDMI converter, however I seem to be having a problem getting anything to display on my projector. I don't know what the maximum length of the cable is for the macmini transmission. I even notified monoprice and asked them if I needed an amplifier or extender, but I got a pretty broad answer of, "you'll have to just buy them and test them." I don't exactly have the time or money to try out a wide array of products. Ive tested the set up with a short cable of 15ft and it works fine. I am running about 40-50 ft from my adapter to the projector and nothing shows. Do I need an amplifier or a repeater? How else can I transmit the video..perhaps the macmini isn't capable of transmitting the video that length of cable. Thanks in advance.