I have just encountered the issue with HDCP on my Mac Pro. I have a 5,1 with a MVC modified 7970 video card. I use a 30" ACD, connected by dual-link DVI, which I love. Last night, however, I downloaded an iTunes movie (Star Wars, A New Hope). Today, I sat down to watch it, and my computer tells me that my monitor is not HDCP compliant. I tried looking in the macrumors forums, and did not find a solution, and online searches didn't yield anything helpful either. A search of the iTunes Store TERMS AND CONDITIONS yielded only: "(viii) An HDCP connection is required to view movies transmitted over HDMI." http://www.apple.com/legal/internet-services/itunes/volume/jpen/terms.html I tried to download the SD version of the movie, but it doesn't allow me to because iTunes says that it is 'downloading'. (owing to my very slow internet speeds out here in the sticks, a 5GB file takes as long as 30 hours. Does anyone have a good solution to this? It may seem odd, but I don't have a TV, and I was hoping to not buy one. Also, I'd like to not give up my ACD. Thanks for any advice.