well actually i dont know if i'm running voodoo. i'm on sc 2.9.2. i automatically assumed i was. and as far as sound issues it just isnt that loud with movies and music, even with headphones.
On the first page of this thread theres a post that says " How to tell if i have voodoo" You basically run Terminal Emulator and look for ext4
As far as your sound being low the new kernel allows for downloading an app and increasing the gain for the headphone and some other stuff. But if your sound volume is already low i cant say. Mine has always seemed to be ok. This might be a dumb question but have you ever tried increasing the volume while playing music with the volume rocker?