This Vista buiness is making me quite unhappy lately. I've had Vista for almost a year now and no problems what-so-ever. I recently downloaded/installed Vista SP1 from the microsoft download site. Now only my left speaker, right speaker, and subwoofer work. They ones that are not working are the middle, rear left, and rear right. I assumed it was because I needed a new driver, which I got from the realtek site. I have the setting on 6CH speaker and everything but no luck. :Argh: I really missing listening to my tunes in surround. I've tried everything I could think of. I uninstalled the driver and reinstalled, uninstalled and reinstalled a earlier version. But no luck. I googled and it said that mp3's could only be in stero and dvd's would be surround but how did I have surround mp3's before SP1? Has anyone else had this problem yet?