By the way, in mm8 i had same problem with colored monsters blurred by the acceleration, but turning off the video acceleration did not remove the footstep sound...Can this problem be caused by mok's patch? I do not recall having the option to turn audio acceleration on and off before the patch... And i play unpatched version of mm8.
Also, maybe if there is someone who has the footstep sound working with software video, can he dump his mm7 registry and put it up here, also telling me what he has set up in dxdiag and other tweaks he made to get it going?