If you want to improve the way M&B looks and sounds, check out this thread. It has several mods that improve textures, sounds, pretty much everything. They work with Native and most mods.
http://forums.taleworlds.net/index.php?PHPSESSID=6b8df92a710aa1402c3220b988fffe0a&topic=44196.0 (http://forums.taleworlds.net/index.php?PHPSESSID=6b8df92a710aa1402c3220b988fffe0a&topic=44196.0)