Hi, can someone help please.. I have been testing both of these products and am quite impressed with both - WinDVD imho gives the better picture quality, however I have an issue with both. Sound quality is excellent, however both fail to produce a centre channel dialogue nor will either use the S/PDIF out. I am connecting to a Sony AMP with an optical - all I seem to get is pro-logic rather the DTS / 5:1 without centre [barely audible]. all other channels are fantastic. If I select 5:1 everything goes very quiet I am using a RAD9000 Pro and Fortissimo 3 sound card. ideas anyone?