For your own hearing safety, don't use headphones here!
This is an unfinished piece, so some things are unreasonably complicated to do. The time zooming has one bug. There is no deleting modules either. Also be careful of not doing feedback loops!
Open one and try tweaking parameters.
To create, connect and disconnect things, you have to use the web console. Press "ctrl+shift+I" or "f12". Also some parameters can only be changed through the console.
You can also connect one module to another by pressing first an output square, and then the desired input.
There is a repo for this at github and an even more unfinished implementation in c++