Board Thread:Questions and Answers/@comment-24071602-20150109005035/@comment-26141035-20150427205248

@KrazyKyle11 As for modifying the sun/moon you will need to place the prefered images in assets/lotr/sky under the names sun.png and moon.png respectively. As I mentioned in our conversation most of the image/sound/speech assets are in the assets/lotr/ directory (in various sub-directories).

@Sinthoniel A resource pack is capable of replacing almost all image/sound/speech assets so long as they reside within the assets directory in the modfile (jar). As for modifying world generation that is more than possible by grabbing the chunks after LOTR has generated them, but before they are populated. Doing so would require the creation of a seperate mod/plugin though. Both of these types of modification are possible without changing the original modfile in any way.