Dosbox.
Install the game IN dosbox, read the stickies to learn how to proceed.
You also will have to mount your CD as D: in doxbox.
The correct soundsettings for DOTT in dosbox are:
It's advisable to create a bin/cue image from your CD and mount that in stead of your real CD, will run much smoother in dosbox (avoids repeated CD spinup/spindown)
You can use imgburn, should you need a program to create one, it's freeware.
http://www.imgburn.com/