[racket] sound + universe report: success.

I think you rather mean the difference between event handlers in Worlds and event handlers for Universe Worlds: return a package that may include a sound to be played. Sounds depend too much on the exact action you took. 

What I dont understand is why John thinks it's simple. I don't understand sound at any deep level. I do understand that it takes time and that playing in asynchronously may create noise and nothing pleasant. How are you going to avoid this? 

-- Matthias