I have XCD Riff Directshow Filter installed, Ogg Vorbis, Divx, Xvid, Etc. I have followed the guides and even tried converting the dat file to an avi or ogm file with no success. My problem is - I have downloaded 4 movies, some from different sources, in XCD format - 3 ogm videos and 1 SVCD. Plain files, without being in XCD format first, all play fine in WMP8 and Zoom Player. I have tried burning to CD using CDRWIN with no luck. I have tried using Daemon tools with no luck. My CD-RW drive reads and copies the files fine, and daemon tools loads them OK, but when I try to play them back (yes DAT files are associated with WMP) Windows Media Player says "Loading...." and then the internet interface appears (indicating it could not read the file.) Zoom player locks my system up. The wierd problem is that the files read off the CD fine, which is a common problem with newbies and XCD, but they won't play. Do I maybe have some conflicting filters? All other "normally" acwuired ogm, avi, and mpg files play fine. Thanks for reading this lengthy message and I hope someone can help. Marc Perhaps I should also mention that when I try to open in Virtualdub, I get an error message stating "MPEG Import Filter - Unexpected End of File"