I recently bought a CD which included 2 bonus videos. A programme which I think is in built in the Cd comes up and the open file box comes up in front of it select a stack, the cd title comes up in the look in box but it has nothing with the file extension .STK, (short for stacks). I cannot change the "files of type" thing. I can listen to the audio through the dell media thing built in to my computer but windows media cannot recognise the files. I cannot watch the videos at all, its really annoying as I cant get the album onto my MP3 player as the dell media centre just plays it and doesn't record onto hard drive. when I open the CDS folder it has a folder of files with .nba extension this is where the vids are supposed to be i think. any suggestions would be much appreciated, I'm not very good with computers and I've never even heard of an nba file! tried searching on net but found nothing useful. Thanks.