Hello, I recently burned a couple of .avi and .mpg video files to a dual-layer DVD+R as a data disc (DVD-ROM) using the program "Burn" which is, in essence, a nicer front-end to Mac OS X's burning capabilities. However, after burning, the video files on the disc are now unplayable. It seems like they are corrupt. Am I doing something wrong? Do dual-layer discs need special settings to make it work as data discs?