All source files for this addon can be found via the Github page.
A note on Timers: Standard Timer - specify an interval to run the library update process.
By default, you need to manually tell the program to re-scan your folders every time you add something, which is annoying if you add new media regularly. In exchange for more complication, each option gives more flexibility than the last, so it’s worth going over all three.
Our recommendation: choose the least complicated option that does what you want.
tia Stryk3r For a workaround, you can configure xbmc via the config file to always clean after updating the library.