Thanks Julio for mailing us this neat guide on tweaking & configuring your sound card.
Even though we don't see new Soundcards coming out as fast as we do Graphics cards they have made several advancements in recent times, such as commonplace 5.1 output & better 3D positioning algorithms.
3D Spotlight's guide will take you through everything from basic troubleshooting of playback problems, to Speaker positioning, Soundcard specific settings & more.
View: Soundcard & Speakers tweak guide @ 3DSpotlight