@ShurikRus (View Post)
Powder Toy calculates it's reactions on a pixel-wise basis. It's not whole masses reacting with other whole masses. Every particle has it's own properties and behavior. So the only way soud effects can be added is playing a particular sound for a particular reaction of a pixel of a particle. While this will work well for individual pixels, almost all saves contain masses of pixels, not one or two. So for a bomb it will like a hundred thousand "BOOM" going off at the same time. It will blow your eardrum if it doesn't crash your computer first.

Also, such a large amount of reactions can happen in powder toy, assigning a sound for every reaction will sharply increase powdertoy size unwantingly. Thus, sounds will not be added to powder toy.

That settles it.

@greymatter (View Post)

 this video explains how sound effects could work in tpt