It might have been useful to learn a little sooner that this is a Csound wrapper. I can understand your reasons for not advertising it as such, but I think there is a genuine utility for your users in knowing that the library they choose for iOS/OSX development has a structural analogue on any other platform they may ever want to write for.
For the rest of us.
(which I discovered from the game Crypt of the Necrodancer which uses it to do (at least?) beat detection for your custom music)
This looks really cool and clean! Nice documentation. I will definitely look at this if/when I start the next iOS project.