And that's kind of my point: The description of what the thing does is so brief that neither of us can figure it out.
Afterward, there's a ton of instruction on how to install it. Including a link to use it on...someone else's sandbox, I guess? Which sure is neat and that may be a platform that I want to play with for my own purposes, but... the point isn't a sandbox, is it?
Or is that the point? Who could tell?
Anyway, I'm not installing new-to-me software that is so detrimentally-vague about what it is actually meant to do as this is.
(I mean: I already know about last.fm -- I've known about last.fm for decades now and even used to give them a few dollars every month. I still don't know what this thing is supposed to be, or why it exists, or what real advantages it might have. I strongly suspect that it could all be summarized very well in one or two decently-written paragraphs, and it seems very lazy to not simply write them.)