I want to convert my project from HD to SD in order to get to DVD Architect studio. I set the dintertelacing to NONE, I rendered the video stream as MainConcept MPEG-2 , DVD Architect NTSC video stream, The video looks very sharp.... then I rendered the audio track as .wav..... But reading the forum.... I noticed that I should have rendered the audio track using Dolby Digital AC-3 Studio. {.ac3} What is the difference in sound? Is it a no no to render in .wav... and use the audio track as such in DVD Architect studio 4.5. As I am downgrading the resolution, because I know the end product can't be watched on a blue ray system... I thought the audio could be wav.... but I am not too technical in that domaine....