From David Singleton's latest diary:
"DGM recently announced that replacement downloads are now available for those albums in the “Heaven & Earth” boxed set, which, due to a mistake by the BluRay author, sadly played at the wrong speed. This has led to renewed online discussion about the merits or otherwise of replacement discs versus downloads. As promised, here is a philosophical consideration of the fundamental issues which this raises"
Read the whole diary entry here.