Based on your post in the other section, it sounds like you are trying to run the CD Version so I'll post here from now on. Unfortunately I have no experience running the game in Windows 98, but I have managed to get the game to run in DOSBox perfectly fine. It has been a while though, so I'm going to have to go through the process myself before I can tell you step by step instructions... just give me a sec...
Okay, so basically I just went and downloaded the three rar files from the site and extracted the ISO file called amomra.ISO
You should have DOSBox installed and either a virtual CD/DVD drive (like ) or be able to burn the ISO image onto a CD. After you have either mounted the ISO file or inserted the CD to your drive then you can open DOSBox.
So now that DOSBox is open you basically need to tell DOSBox where your CD drive is and where your hard drive is, because it doesn't just know automatically. I've taken a picture of it and attached it below.

In the picture you can see that the first thing I do is mount my CD drive:
mount d f:\ -t cdromThis is telling DOSBox that I want it to read my F:\ cd drive as D:\ in DOSBox.
Then I mount my hard drive:
mount c d:\gamesThis is telling DOSBox that I want to read my d:\games\ directory as C:\ in DOSBox. (I chose to use a /games/ directory that I created, but you can create and use any directory you want, just make sure you create it first in windows before you try to mount it in DOSBox)
So now that both your CDRom drive and Hard Drive are both mounted in DOSBox you can basically go through the regular dos commands to install the game onto your hard drive and play it.
Now the game should work, along with the voices. Depending on the speed of your computer you may want to run the game around 8000-10000 cycles. (CTRL+F12 to raise it)
Hopefully this isn't too confusing, just know that I was able to get it to work perfectly by just following these steps just a second ago.