I had already downloaded this tool there, but I didn't know how to use it either because it is complex and lacks a tutorial and the explanations are either very shallow or lose meaning with the translation.
But with a lot of effort I managed to create MapTracks and I will try to make a tutorial on how to do it clearer:
A - I use an image editing program (photoshop) but you should be able to use any other program that can save in *.TGA.
B - I also use the SlimTex program.
1: Create the image to your liking, use a black background. Save the file as TGA, and in the save options you need to turn off the alpha channel. Every difficulty is there!
2: In SlimText use the Batch to GPI tab, enter the file output address and drag the file for conversion and click convert.
Okay, now just replace the file or, in my case, place it in the track folder.
I hope it helps if other people are also looking for this.