Blippo+ - The Electronic Program Guide Demonstration Disc
Weird little CD this one. It's an audio demo for the Blippo+ Electronic Program Guide, so it's 74 minutes of easy listening electronic music punctured by occasional marketing blurbs. The music is nice, honestly - reminds me of Eyeliner, or some stuff on Sonoton.
More seriously, I'm pretty sure this is the entry point to an ARG - but if so, I haven't found its most important secrets yet.
This isn't not online, but it's also not easy to find either. It'll take a little digging to get a listenable copy.