I don't have the new sim yet but this is disappointing to hear, as I liked how accessible and easy it is to tweak sounds in the older sims. It sound like they've gone the route of other games, using a compiled sound-bank generated by a middle-ware audio tool that associates sound files and envelopes with event triggers and such, like FMOD, Wwise, etc. Hopefully this will all be documented in a SDK, and addressed eventually by enterprising freeware or payware developers.
- dcc