Madigan's Anderworld updated to version 0.9.4.3
-Chicken Chunks (chunk loader)
-Tracks for Custom NPCs Music
Type in the modpack name (Madigan's Anderworld) or paste the following url into the search box.
Finally, click Install at the bottom right of the launcher after you select Madigan's Anderworld from the list on the left. The launcher will handle everything else!