Xenharmonics (micro- and macrotonal tunings etc) is a genuinely interesting area, particularly for modular synths where one is working far outside the constraints of the Western music canon, and where music is rarely written down and is often composed on-the-fly by sequencers and generative patches. We went to some effort to add support for a lot of microtonal scales in O&C, as well as non-octaval tunings such as the Wendy Carlos tunings and the Bohlen-Pierce tunings.
However, the microtonal scene also seems to attract people who have fallen for, or who are perpetrators or promoters of pseudo-science, conspiracy theories and generally wooly and non-critical thinking. Richard D. James seems to have a foot in that camp, with his mentions of cymatics (which is closely associated with Rudolph Steiner theosophical and antprosophical pseudo-science. James has also bought into the whole 440Hz conspiracy theory and the Colundi thing (see http://colundi.net/colundi.php).
I recall that Olivier has previously pointed out the folly of numerological justifications for 432.3 Hz tuning (or whatever the "magic frequency" is supposed to be), given that the units of frequency, Hertz, are based on entirely arbitrary (and not very logical) divisions of time, and thus the numerical value of any frequency expressed in Hertz is itself also arbitrary and thus cannot have any deeper numerological significance.
I would have liked to have read more about what the interviewee thought about synth design, than the wacky thoughts of the interviewer, frankly.
But yeah, the cubic speakers caught my eye too.