Experimenting with sound, I have made a recent discovery that Dolby processing on video's in Power Director is not always suitable. Dolby sound processing is an interference (for me). As I feature water alot in my videos, this translates to white noise in many cases, waterfalls being the most complicated kind of sound. I have been wrestling with dips, holes and disturbances in my sound tracks and then... it dawned on me that the Dolby processor is treating the water as hiss and varies the level accordingly causing the ugly sound balance. Thank goodness I can turn it off!