I recently went into the studio with my band. We recorded our material in a program called Pro Tools. The material was then burned onto a DVD from a Macintosh G4. When the DVD is loaded in the DVD-player on my PC, it shows that data is being taken up - but shows no files or folders. What could be causing this? Is there a program or something I have to do to retrieve the files from the DVD? Or is the issue on the end of something needing to have been done while burning on the Macintosh? Any information will be greatly appreciated.