I've got Windows Media Player 10 installed, along with powerdvd & DivX. I downloaded a video that is encoded in XviD whioch is a DivX type file ? Anyway when opened with divx it played the video but it says it will need a new sound codec in order for me to hear sound. I know that the sound in the video file is AC & 5.1, how do get some sound working on the file ?