Since I already own the previous two volumes, yes, the first CD is a mix. So far they carefully blended one song into the other without any additional beats that would be completely unnecessary. Nice to listen to but certainly not essential. I reckon that the two 12" versions by Bryan Ferry and Howard Jones are immaculate since Ferry's song was available already on one of his official compilations (in Japan) and Howard Jones released his 12" as a download on iTunes. And on both versions I could not find any crackles.
For volume two Blank and Jones did a very good remix of Kim Wilde's "Kids in America" (available as a download only; unfortunately) and they wrote that they even got the original tapes to do so.

