'Allo, 'allo, 'allo, wot's all this then? I have a few days off (as opposed to the usual few off-days) and a new bit springs up like a weed. Good luck to it.
As something worthy of technical note, I am proposing a link to good ol' (or bad ol') HFC:
which I hope James will allow, because, later in the discussion of vinyl enters the HFC resident technical whiz adb (qualified in electronics). The bit of interest is p.5, where he does a great exposition on sampling rates and why people's intuitive ideas on the subject are completely up the creek. It's not a complete explanation, but it's the best we'll get without resorting to the mathematics (in which I for one would be lost by the first few lines).