Strange Hum in Diablo 2

[Mekadave 0]

Hope someone can help. I'm running Win2k/SP2/SRP1 on this system:

 

Asus P5A-B

512MB PC133 SDRAM

K62-500mhz

Voodoo 4 4500

SB Live!

Altec Lansing ACS40 speakers

 

I'm currently playing Diablo 2/LOD 1.09d, and in the last 2 days, every time I go into an interior (i.e., dungeon) location, a loud, piercing hum starts coming from my speakers. It slowly builds to the high pitch, and stays there til I exit the interior location, almost in time with the location music. It ONLY does it in those interior places. I haven't made any drastic changes to my system in the last few days (updated Nero and BlackICE Defender, Norton Antivirus defs) or changed the sound settings. All the sound system's physical connections are in solid, no loose plugs, or plugs in the wrong holes.

 

Any ideas? Thanks in advance.

[Mekadave 0]

Well, just in case anyone's curious, I was able to fix that weird hum. Reinstalled the Live! drivers, and the hum went away. I should've know it'd be something simple. Thanks anyway!