1.: Add the path to the Start.bat file here, where your MP3 file is located:

set "directories="j:\_Projects\Website\music\Moonplum - At the Kitten Zoo\""

Another example:

set "directories="D:\MyMusic\""

This means: when you double-click Start.bat afterwards, a .json file will be automatically generated
for all MP3 files located in this directory:
D:\MyMusic\

:-D

The .json files are important because they allow the MP3 player to visually render the waveform
of each MP3 file inside the player.