Mold? In the rest of the world it's "mould", oh well... Makes CDs sound kind of attractive, no? I remember, years ago, in Audio or Stereo Review someone who lived in the far East having a problem with fungi on LPs and what was recommended, if memory serves me right, was the type of product that Radio Shack used to sell in a spray bottle and, judging from the powerful odour, contained some type of solvent. The problem, I would think, is that the solvents must have an effect on the vinyl. Combine that with the fact that this vinyl is decades old, and one should worry about the negative effects. I see people at used record stores using all sorts of products on used vinyl to clean it and get it to shine that must produce deleterious effects on the vinyl. The other thing is to make sure that the jackets are not contaminated and that the newly cleaned records are stored in dry conditions that do not encourage the growth of spores. I don't think that a water-based product would be too effective in curing this problem, but folks living in hot and humid climes must have a better idea than me as to what works. I would be leery of any product that would cause the vinyl to break down over time. Once they are cleaned, exposing the records to light for some period of time would be helpful,