I hope you're still here, man. here's the capx: mediafire.com/file/mxyb80xiastzec5/Sonicgame.capx/file
I have it set so you can press R to reset the layout. but when that happens all the sounds and particles play at once. So i hope you can find a fix for that.
Edit: I think i solved it actually. I had it so when an explosion was created, a sound played. So i got rid of that and put the sound on when the enemy was destroyed instead and the sounds didn't play all at once anymore.
but maybe you can find other problems i'm overlooking. good luck :)