It seems the audio part of my Blu-ray disc is taking too much space? From Vegas I have rendered 1 hour which is an MPEG-2 file that is 3,1 Gb and a AC-3 file of 84 Mb. I know DVDA re-renders the audio to PCM for Blu-Rays, but an hour of PCM should be about 0,5 Gb not the 1 Gb that I seem to be getting. The total Blu-Ray ISO file is 4,1 Gb. Is there a way that a MPEG-2 file of 3,1 Gb + sound can be made to a size of around 3,6 Gb on a Blu-ray?