I have Toast 9 and I pretty sure that my source material has been re encoded. I started out at 7 something GB’s and then after the encode it ended up being 4.86. I reluctantly burned a disc on DVD DL to try it and sure enough, image quality was worse and the audio was not 5.1 but 2.0. I was able to confirm in addition that it was not the same bitrate either by playing it on my PS3. Have you worked with Toast 9 at all figured out what’s going on?