Lyrics out of sync with Nvidia GeForce 8600M GT

[Aarrgee]

I just got a Dell Vostro 1500 with Vista Business on It. I've noticed that the lyrics in Hoster especialy for Pop Hits Monthly are out of sync even when I adjusted the offset. If I adjust the offset for a PHM song it would play good but then a Sound Choice song would be out of sync and so on. I optimized vista for best performance and the lyrics and music would be in synce, but then the lyrics on Sound Choice songs would be garbled. I had to revert to "Adjust for best appearance" so the lyrics would show nice but then it would make the lyrics and music out of sync. Really don't know what to do now. I've checked the nvidia site for drivers but there aren't any to download. Anybody have any suggestions? Thanks in advance.