pico-mixer | Mix different sound ambiances with a Pimoroni Keypad

The code.py script runs on a Raspberry Pi Pico, running CircuitPython, itself connected onto the Pimoroni Keypad. The first 12 keys control what audio tracks to play/stop, and the last 4 keys allow you to control the volume of individual tracks, as well as pause the whole stream. When a key (or a combination of Volume up/down + track key) is pressed, a JSON-formatted message is sent over USB. This message is read by the mixer.py script, a curses app displaying each individual track, associated with their volume bar.
(This guide assumes that CircuitPython has been installed on the pico. If that is not the case, follow these instructions first.).
(This guide assumes that CircuitPython has been installed on the pico. If that is not the case, follow these instructions first.). Before being able to execute this application on your Windows machine, you will need to install the Python programming language. To do this, go to the Windows download page, click on the "Latest Python 3 Release" link, and follow the installation instructions. Now that Python is installed, click on the green Code button at the top of this page, and then on Download zip. This will download the project as a zip file in your Downloads folder. Unzip it by right-clicking on the archive, and click on "Extract here". Open the pico-mixer-main folder, and its subfolder, until you can see a README.md file. Open the pico folder. Plug the keypad to your computer using the USB cable. A file explorer window should open. Copy all the files in the current pico folder to the CIRCUITPY USB volume. At that point, the keypad should light up. Unplug it. Go back to the parent folder. Now, click on the address bar of your file explorer, type cmd and then press the Enter key. You should see a terminal, opened in the folder you were in. Type in the following commands to install all the project dependencies (don't type the C:\...> part, it's just there to mimic what you see in the terminal). You only have to run these commands once. At that point, all the dependencies have been installed. Now, copy all the sounds files you would like to play (12 max) under the sounds folder, and open the config.json file with a text editor, such as Notepad. Replace each example title attribute with the name of a sound file you copied under sounds and, feel free to add a couple of descriptive tags under the tags attribute. Save the config.json file.