I'd bet it's like this.
Trek on telly chez Steve+Gills.
New Sampler in same room. (maybe even one with a retrosample function like the Roland W30 for example, where you can hear something, THEN hit sample, and get it in RAM, because it runs a constant PCM buffer)
OR just a sample CD?
I got a Trek Sample CD not long after aquiring my first proper sampler (an Akai S01)...the result is a tune made from a few bits of Amiga games (desert strike drums, strings from Epic) and such wonders as the transporter energise noise, the alert klaxon and spock's scanner. It happens.
I reckon it's the same deal with Hal on Murder, although I always think THAT gives away someone in the band as a real Clarke-head, because....any casual viewer of 2001, would come away thinking Hal was a mad, horror movie machine who got what was coming to him.Only someone who's read the book and paid attention to what ACC says about it, would perceive HAL's death as murder, or at least manslaughter, much as Dave Bowman himslef did while carrying it out. (Murder predates the movie 2010 in which cinema audiences finally had the sad truth about poor HAL revealed to them)