yeah, I read about this in finnish media.
First when I was reading "printed records", I thought about this digital file preserving system that's available for free. You print out complex barcode type things, which contains the data of digital file. Then anytime you can scan it back on computer and transform back to digital file. Works as hard-copy storage of important files. I assume it works most of all for small files of text/databases etc. Would imagine saving music as barcode would be impossible, heh.. Was reading about it from science magazine. Program is free of charge. 10 codes fits per A4 sheet, so they're much bigger than usual barcodes. Even if somewhat nerdy idea, instead all those silly download cards, I think better would be to just have booklet of those barcodes, hah..