Hammersmith (different question)

[dfleenor@nettech.com (Super Dave?)]

I've posted this question before, but nobody replied, so here goes again. I
have a copy of Kate Bush - Live On Stage, and the date on it is the same as 
the Hammersmith concert video. But when I listen to the same songs on each,
they sound completely different. Were the songs on the EP actually taken
from the same show as the video? Or are they mixed so as to sound different on
each? Help, this has been bugging me for some time (obviously I have no life).