This sounds damned familiar. I have created something like this. Did you get it from a certain gentleman called Chris ?
It's been awhile since I got these discs. So, I can't recall the name of the person I got them from.
I do know some of the stuff on the discs, like the 7" mix of Liar and the extended versions. But then there are all the remixes of You Don't Fool Me, which I don't know the remix name. And then there are some older songs amongst the tracks from "A Kind of Magic" that were from something called "Digital Masters" or something along those lines. Don't know if that helps you out or not.