Dig this... in the early 80's, before the CD-ROM format became popular, there were actually a few games written on vinyl records for the Spectrum computer. One game was released by The Thompson Twins, a British band which helped define the music of the 1980's. Another 80's band, Information Society, buried a secret message in one of its albums, which could only be read with a modem set at a very low baud rate.
You'll find more information about it here. And to think I actually JOKED about LP-ROMs in an issue of one of my old fanzines!
http://www.kempa.com/blog/archives/000053.html
JR