I am having serious problems taking DD or DTS audio from DVDs via my MCE machine. This worked a fews ok but i do not know what has changed The machine is connected to a Yam 657 via digital coaxial (i have tried digital optical with no difference) and receiver input display "flickers" between DD and DTS and causes the audio to "disappear" when changing between the two. The time it takes to "flicker" between the two is random and so is whether DD or DTS gives sound to the speakers. Whats even wierder is DTS appears on disks that do not have it on!! PCM shows on the receiver but i am not sure if it should. Config as below ; Pure Video 81.89 set to SPDIF Graphics drivers .223 SoundMAX Audio .4151 Ffdshow has AC3 & DTS set to SPDIF Live TV works ok and the receiver converts stereo to PLii. I think the issue is ffdshow is active when playing DVDs but Pure Video should be doing the audio (this is proven as ffdshow audio icon is task bar and Pure Video GUI does not have Audio settings). I was thnking of using GraphEdit to check the filter chain but i am not sure how to?