The version of Dungeon Keeper from HOTU doesn't have any sound except the one in the intro. That's why it's only 75 MB large compressed.
Usual size would be around 220 MB in an archive. But it's actually too big for the site to upload it here...
I have sound for Dungeon Keeper from my version of the game on CD(a directory with all needed sound things) in
German only. I could send it to you if you want. Just contact me over MSN and we'll see. It's around 40 MB large.