Sorry, It might be because it's late here....but can you explain the logic of how this does anything besides slowdown/speed up the audio?
I might be thinking too digital....
I think the idea is that you're caputring four times as many samples per second, greatly reducing your odds of a dropout. You'd have the option of time-compressing the audio, essentially discarding three out of every four samples, using some sort of interpolation algorithm (which is basically what sampe rate converters do), or playing it back as is -- audio captured at quarter speed with a 44.1KHz sampling rate should play back at the proper speed using a 176.4KHz sampling rate, which many audio cards can already handle, to speak nothing of what will be available a few years down the road.
FYI, a properly stored analog tape will play back up to half a century in the future (we know this because even poorly-maintained old tapes are being found and restored all the time). A digital tape is far more likely to show its age, even after a few years of storage, beacause if you lose a sample, you lose a sample and that's it. Analog degrades far more gracefully than digital.
Oh, and I'll believe all those "100 year" archival CD claims in 100 years when a) they find a working CD player to test that theory and manage to retrieve usefull data from one of my Mitsui discs.