POOF! The power went out after I removed it as I tried to slip it back in. Restarted and hadn't noticed immediately that the sound wasn't working until just a little while ago.
So I thought it was that I had to reinstall the drivers... but I checked and rechecked the Device Mgr and it says they're all there, but I persisted to the Dell website and found this products slew of sound card drivers. Then I realized that the sound worked fine upon reinstalling Windows from scratch (even got the new age music that kicks in when you're setting up Windows for use).
So it just dawned on me that this could be the problem. Any advice out there? Did I "blow" out the sound card or something?