Well, I've been trying to get a program called SRS Audio Sandbox to work under Wine, but since it works with the audio output, it requires an audio driver and looks for the Windows one instead of the Linux one. Any way to emulate\imitate that driver so it'll work?

Hello & welcome. You're asking a lot.
sandbox is a 'chroot jail' and operates differently in windows & linux. Changeroot limits what can be accessed by the program. If you run
chroot /somewhere/harmless
and the location is properly set up, that program will see /somewhere/harmless as /, so 'cd /' will still have you in /somewhere/harmless

Linux throws all sound & video to the system drivers. Maybe you can set something in winecfg to use native drivers.Otherwise,I'd follow the advice of Fagan in Oliver Twist (Musical)

"I think I'd Better think it out again!"

Sorry for the apparant confusion, but Sandbox in this case doesn't mean a Sandbox program (to the best of my knowledge) but is simply part of the name. It's a program that enhances the audio output in quite a few ways:
HomeEntertainment

Press the laptop for a demonstration, in Windows, it basically sets itself as the base audio output, semi-replacing the original driver while actually making another layer of audio processing on top of it for some amazing results. The problem is, while trying to run it under Wine, it gives out an error saying it can't locate the audio driver. So if I was able to simulate the audio driver with one of the Linux drivers, it should work in theory.

Guess who has his head in the sand. There's distros like Puredyne and Musix(?) which cater for audio. I fired up Puredyne and took a look at Ardour, and it knew more about me that I knew about it, but my audio buff son had handled similar kit on Macs in University. There's a collection of all the audio stuff, codecs, mixers synths, filters etc. for linux. Try for something there to suit.
http://puredyne.org