I found out that when i watch DVD via Media Player Classic i dont get quiet mode (its not quiet enough). The strange thing is that the problem remains wether i decode ac3 with ac3 filter or with intervideo audio decoder. When i switch to Windvd6 it works well.I checked options already... But if i have xvid with ac3, than how can i make sure that windvd is using ffdshow for picture decoding?? I think ffdshow should decode xvid much better than windvd. Im using Revolution7.1 (analog) and Megaworks550 and wave out. Is it true that Revo has no directsound output?