Sleepers Awake mod doesn't work as intended

[argonvegell]

Sleepers Awake!
http://www.nexusmods.com/morrowind/mods/37208/?

Here's a sample scene from Sleepers, Awake! - a mod for Morrowind that adds eerie voiceover to the disturbing dreams during the Main Quest.
https://www.youtube.com/watch?v=7XPfDOUUWWU

However, in OpenMW, all I get is the laughter and the dialogue boxes, but no eerie voiceover.