If you are seeing the pink or black texture-less surface I believe it means you are out of memory. In other words too many high resolution textures. Try using less mods or the 1024x1024 some people offer.
Yes I do. And I figured out which files I needed for boss music. mus_combat_boss mus_combat_boss_02 mus_combat_boss_03 Here is the mod I made: http://www.skyrimnexus.com/downloads/file.php?id=4162