Hi Nichita, about the UI we have setted the empire's one for all because is the lesser bugged of all and because there are only 7 type of culture to which are related that will cause bugs sharing them between factions totally different, for example chaos UI in beta version was also used by lizardmen, tomb kings UI used also by skaven and night goblins etc, so we are trying to make an universal UI that works for any faction; about music I have to point out that the next patch will include 3 new types of music exclusively for bretonnia, kislev and dogs of war, so no more shared music with empire, plus new tracks for other factions. About the sub-submod that re-add the previous UIs and musics if you want maybe to make this sub-submod yourself, I can give suggestions for the 2nd one; follow these tutorials in order and you will have back the original COW tracks:
http://www.twcenter.net/forums/showt...racting-sounds
http://www.twcenter.net/forums/showt...-Music-To-M2TW
if you want you can also make new types of music with the following tutorial
http://www.twcenter.net/forums/showt...Specific-Music
Hope that will help you