Torque has default support for footstep and plenty other player sounds, but as far as I can tell, the default player is not set up to use them. I haven't investigated too heavily (by which I mean all I've done is notice the textbox while playing around in tree and set them to the sound of a tankshell exploding in hopes of doing something funny.), but if I haven't overlooked a setting in the datablock somewhere, it's either something with the model or with the engine. I'd bet it's the latter.
It also has some impact sounds, but the player is not set up to use those properly either, since it cannot differentiate between a hard impact and a soft one, so jumping plays the same sound as slamming into the floor at terminal velocity.
There are plenty other fields too, like vehicle engine and movement noises, which were utilized in Tribes 2, underwater breathing sounds, shallow water footstep sounds, decals for footprints, and different sounds for walking on metal and snow.
As far as I can tell, none of them work.