I am running windows 7 + Centrafuse 3.1 and have no problems with volume. What front end are you using?
After a spring break spent installing windows 7 and organizing music for my carPC, I finally reinstalled things tonight.
Unfortunately, it seems as if Windows 7 has an automatic volume feature. I can't turn up the system volume past more than 10-15%. If I do, it slowly lowers itself back to this 10-15% level.
I'm hoping somebody has a fix for this!!!