[RANT]
I dare you to find a credible example of any digital recording from 1980 that's stood the test of time. What were they recording on digitally in 1980? Maybe a Sony PCM or some other primitive format? How'bout stereo PCM adapted to a VHS sized tape cartridge, as in a Technics so-and-so PCM deck? (ADATs were not on the scene in 1980, IIRC). Ooh, maybe even BETA cartridges!!! What of Bits?? Word length?? Compatiblility??? Come on!! What "music/data" from 1980 stands out as an example of digital data stability? How many times would such "pristine" data have to be translated and ported to platform after platform,... as the years in digital technology marched on. And what specifit "home recorded digital" data from 1980 survives as an example of this theory? Some Tandy Midi files, or something off the Commodore 64, maybe an Atari,... all surviving the test of time? No, I don't think so.
But, on the other hand reel tapes dating back to the 30's are readily "translatable" from "standard" old-school analog recording technology that's still available today. Go find your Tascam DASH or Sony PCM 24-track digital machine on the scrap heap of history.
Not that I'm adverse to resurrecting older obsolete formats, but your "data from 1980 having integrity" argument doesn't hold water with me.
Thank you,...
Cheers

[/RANT]