Does anyone know of a mixer that will interface with inputs already present in Windows? I've been looking around Amazon and all I see are ones with built in mixers (the inputs go into the mixer itself). I'm looking for one that will allow you to modify the sound settings already in Windows. In other words sliders will correspond to inputs and volume controls already present in Windows, it'll just have a external interface. Like what you find on a keyboard, only sliders for all the controls (programmable or such).
It'd be alright if it has inputs too, it just needs to be able to modify Windows settings or setup to do so. Something cheaper too would be nice.