glabels: Ready For Prime Time
Joe Barr writes "NewsForge is running a review of glabels. It's still in beta status, but it's ready for prime time now. It knows hundreds of predefined label formats and allows you to design your own templates for custom work. Barcodes, images, just about anything but MP3 tracks can be printed on them. glabels is destined to become one of the most popular native apps for Linux." If you need harder-core barcode support, the excellent kbarcode would probably make a good complement. (NewsForge and Slashdot are both part of OSDN.)
its not kbarcode.org, but kbarcode.net
Since a barcode is merely a specialized format for binary data (similar to a hard drive's RLL, in fact), I'm sure it's a matter of time until someone figures out how to transfer audio data to a print medium, for later retrieval via barcode scanner.
I know a hobbyist magazine back in the '80s used to print entire programs in barcode format. I think it was for the old Radio Shack Model 100 laptop.