You can specify materials on your own textures using one of the following 12-character-prefixes inside custom materials file:
- VENTTEXTURE_ (Resilient metal/brass sounds)
- DIRTTEXTURE_ (Dry dirt/sand/gravel sounds)
- GRATETEXTURE (Reverbing metal grate sounds)
- METALTEXTURE (Solid metal/steel sounds)
- SLOSHTEXTURE (Mud sounds)
- TILETEXTURE_ (Squeeky plastic tile sounds)
- WOODTEXTURE_ (Wooden planks sounds)
- COMPTEXTURE_ (Fragile metal/plastic/electronics sounds (hits only))
- GLASSTEXTURE (Glass sounds (hits only))
- FLESHTEXTURE (Flesh sounds; sort of like trampling through a muddy puddle)
- SNOWTEXTURE_ (Sound of crunching snow when walking over)
Custom materials file can be selected in map properties.