programming

Hello, I recently downloaded Foodbar. I found out that it's customizable and would like to make my own themes. Does anyone know how it's possbile and what language is used to program these? If so I would gladly listen, even if it's just a guess.

So when you have a .wav file, open it on audacity (or any other software which allows spectrogram), it instantly converts the sound into this beautiful 2D graph Now let's say the background audio is mostly silent And the only sound that is being heard from time to time is gunshots, so every...