Holds a dictionary of common sounds associated with a surface. This allows you to pick and choose an appropriate sound.
| Break | Sound to play when an object made of this breaks | 
| Bullet | Bullet impact sound for this surface. | 
| FootLand | Landing sound for this surface. | 
| FootLaunch | Jump sound for this surface. | 
| FootLeft | Left footstep sound. | 
| FootRight | Right footstep sound. | 
| ImpactHard | Hard, high velocity impact sound. | 
| ImpactSoft | Soft, low velocity impact sound. | 
| ScrapeRough | Rough scraping sound when scraping against another surface. | 
| ScrapeSmooth | Smooth scraping sound when scraping against another surface. |