There are posts on Amazon which say that these two disks will not play. They make reference to the AVS forum, which I checked. There some folks report problems with them and the 360 add-on and some say the A2 has a problem with them. Mine got bounced back to Amazon by the USPS because the USPS changed my zip code and stopped forwarding my mail. Just thought I'd bring this up to see if any HTFer's have any input information before I re-order them.