Hi there
It works! I set AHI drivers to UAE 14bit Stereo and now I have sound for the intro and cut scenes. I tried selecting Paula Fast 8-bit with 2 channels of sound but it didn't do anything. This must only be an issue for emulator users. Good to know all this time it was my settings and not the game. :) :)
With PIP mode, it still cuts off the lower section of the screen, so I've gone back to normal Hicolour mode.
I noticed the Ion Canon was firing often, but it happened once every 5mins or so, and the power of the canon was not enough to take down any buildings, so I just repaired them and ignored the canon. I've never played this game before, so I don't know if this was meant to happen, but the harvester getting stuck in the refineries on saving was something which was noticeable.