Hi I'm hoping someone here can help me out as i've been tearing my hair out. Basically, i've just installed Windows 7, (custom install from upgrade disk), and i'm having problems with sound. All my music sounds fine, so something is right at least, but if i try and watch say a video on the BBC website, it sounds ok for a split second, and then it goes really distorted and muffled... like it's been encrypted or something? It's the same with Youtube or other websites with video on them too. I've tried updating the latest drivers, Flashplayer and Java etc, but still nothing. Help please! Btw... my sound card is a Sound Blaster X-Fi Xtreme Audio.