The book is this one - http://www.saintetienne.com/felt-the-book/.
I'd forgotten the title, but it turns out that I was pretty much on the money just by calling it 'the book'.
I didn't buy a copy at the time and regretted it later. All one thousand copies sold out rapidly and I have one seen one for sale since, at a vastly inflated price.
There was a much more affordable, but equally rare book published - again I can't remember the title off the top of my head, but I did have the sense to buy that one at the time. When I'm home I'll find out the name and authors, but currently away for a few days.
I can't help you on the files front. The link to Lawrence of Belgravia that was posted on here a while back had expired by the time I spotted it.