This Audio Driver enable the “Stereo Mix” input for our Dell Dimension 9100 with Windows XP SP3: 5.10.5208_XP32_XP64_MCE_2K_STACGUI.EXE.
I think this driver will work for other notebooks with same audio chip. The Device ID may be obtained from:
Start > Control Panel > System > Hardware > Device Manager > Sounds, video and game controllers
Your Sigmatel audio codec should have Device ID: 7680, overwise driver will not work.