I think the book compilations of FT (presumably bar the first one) were all from John Brown Publishing in the 1990s- i.e. before James Brown (no relation).
As far as I can recall, the CD-Rom versions (while FT was at Dennis Publishing) had problems with their very limited indexing, plus some other glitches. Given the frequency of upgrades for both hardware and software, I suspect most modern users would have trouble reading those versions now.
Better to stick with paper - it'll last for centuries (well, if we're talking Gutenberg Bible-type paper - that wood-pulp stuff crumbles to dust after only a few decades, as my SF paperbacks from the Fifties and Sixties attest. Maybe we ought to consider stone-carving. No, a few millennia of weathering would put paid to that. Anyone have ready access to titanium plates?).