I am having a problem playing my backup discs. I have tried different guides (Scuba Pete and Mayo, and Sefy was another) media and software. I am using a Sony DRX710. When I copy and use Shrink to make a movie fit on 4.7G media it works and plays back fine. However, when trying to copy to 8.5G media the copy is successfull and recording will play on computers but will not play on a home theatre DVD player. Like I said, I have tried various software (Shrink, Decrypter, AnyDvd etc.) What could be causing the problem? Thanks for any help/suggestions you can extend.