people with oxygen

What is voodoo?

lets you tweak many audio options on your phone. things like Bass Boosting, downmixing, HiFi play etc.

it's 2 parts
1. you need a kernel (either custom or one included with a rom) that supports voodoo.
2. you need the voodoo control app from the market to tweak some of those settings

i suppose it's possible that some kernels might tweak a few of those settings by default so you wouldn't need the app to get some of the benefits but if you want to tweak things yourself you would.