Hi eli0s,
I played with the file and tried to dissect it so that would understand how it works.
Yes, it is a piano that functions but I don't understand why there is only one key used for everything.
I wasn't able to adapt it to implement what I envision (which is to replace an existing Flash file with a HTML5 version).
The reason why I want to re-use is that I get very bad performance on my Android powered Galaxy Note3 as there is considerable lag between touch and sound playback.
Now I am trying to optimize the piano to see if I still could make it work somehow.
Once I have that, I'd love to buy C2 and publish the instruments on my website.
I am still new to C2 and it will take a few days until I make sense of it all.
Maybe sometime in the future I will be able to understand your file and redo the project.
Sorry for the confusion. - v