This looks fascinating. I potentially have a project where I have to upload bunches of files and doing it by hand is a pain!
Tip: a "Directory Reader" can read the contents of the folder, then create that text file. For example I use "Karen's Dir Reader" but I am sure there are others. (You may just have to fiddle with the setting to turn off "too much info" in the output file.)
So then you can maybe run the dir reader, then run this, and off the files go!