You can download Episode II of The Antioch Chronicles here. It requires the full version of Starcraft with the Brood War expansion set.

If the self-executing MPQ doesn't work for you, you can kick it old skool and download the voices and portraits separately:

Simply extract these into your Starcraft directory. To turn them off, delete or rename the "sound" and "portrait" directories.

The Antioch Chronicles™ © 1998, Eric Dieter & Ruben Moreno. All rights reserved. The Antioch Chronicles™ trademark and associated logos are the exclusive property of Eric Dieter & Ruben Moreno. Characters and distinctive likenesses thereof, character names, item names, place names, named events, artwork and all other related material not disclosed herein are protected under the laws of the United States of America and other countries. Any reproduction, retransmission, or unauthorized use herein is prohibited without express written permission.

StarCraft® is a registered trademark of Blizzard Entertainment. All rights reserved.