remember a story that you could run a certain program
on the Altair and hold
an AM radio next to the Altair and you would hear music.
A few years earlier than the Altair, a DECUS package let you do this
on a PDP-10. See
http://pdp-10.trailing-edge.com/decuslib10-01/01/43,50011/mblurb.txt.html
(NOTE: For simple, quick-and dirty listening, placing a
transistor radio near the MI, or near Bay 2 of the KA10
will produce the music, but hardly in Hi Fi.)
Tim.