Sorry, I should have looked at the subject line again.
Have you tried new drivers from ATi? My Main Driver is ati2dvag.dll, Version 6.14.0010.6320 dated 6/2/2003 20:41:02.
Also, my WinXP Pro AMD Athlon XP 2600+ computer is using the on-board RealTek sound system.
Just looking at my WinXP HE P3 notebook with DirectX 8 shows all 3 features enabled on the S3 Graphics Twister 0012 adapter with 32MB Shared Memory.