Music in CodeRandom2 has finally been added, and the link to the help page is now correct. Your own custom music can now be played in CodeRandom2 by placing mp3 files into the CodeRandom folder. Sound effects are a plan for the future, but don't do anything right now. I have plans to add another cipher to either CodeRandom, CodeRandom2, or both. More functionality has been added to add a more personalized experience, as long as you know the available themes in PySimpleGUI. 

Voting for a new cipher will be done on BuyMeACoffee, once I figure out which ciphers I can implement.