I'm asking this question because when Time Warner finally distributes its new HD DVR (Scientific Atlanta 8300) I'll finally be able to get 5.1 surround sound when it is being broadcast. My question is, and there might not be an easy answer or even a right or wrong answer, will a movie broadcast on say HBO/Showrime in 5.1 sound the same, better or worse, than a DVD of the same movie played on an average DVD progressive scan player?