There’s interesting posting on MetaFilter about The Hitchhiker’s Guide to the Galaxy: Do you realize that robot can hum like Pink Floyd?

“The Hitchhiker’s Guide to the Galaxy was (originally) a radio series, broadcast on BBC Radio during March and April 1978. It was a success. […] However, subsequent releases of the original radio series were edited (in part for copyright reasons), and the original broadcasts have been unavailable, until now. A software engineer and H2G2 fan has now tracked down the recordings of the original broadcasts, analyzed the differences between them and the official CD releases, and provided patches and instructions to update the CD release to match the original broadcast. Not only that, but he has written software to automate the process.“