The Music of the Chemical Spheres webpage has been redesigned and now has audio from 40 molecules. The improved interface enables the sounds to be heard by clicking on keyboard like buttons or using keys on the keyboard. Matlab Octave source code is given.
Since the chemical sounds generated at the actual frequency of their molecular vibrations sound a bit high pitched and unpleasant to listen to I have now regenerated the chemical audio at a quarter of their vibrational frequency as determined from the FTIR spectrum. You can switch between the normal and low frequency audio using the select control. The chemical sounds are deeper and more pleasant to listen to (actually kind of trippy!), more information can also be discerned and if the chemical audio was to be used, for instance in reaction monitoring, the low frequency audio would be more suitable for this purpose.