A wagering game system and its operations are described herein. In embodiments, the operations can include providing a custom sound design interface. The operations can further include receiving user input via the custom sound design interface, wherein the user input is to design a custom sound for a wagering game machine including presentation instructions for the custom sound. The operations can further include storing the custom sound. The operations can further include receiving, from the wagering game machine, a request for the custom sound. The operations can further include transmitting, to the wagering game machine, the custom sound including the presentation instructions for the custom sound.