I made a music mod for Acw, it replaces all the warpath music with historical civil war tunes and other music.
Download Link: https://drive.google.com/folderview?...2M&usp=sharing
Instructions: Simply put it in your etw data folder which should be located at C:\Program Files (x86)\Steam2\SteamApps\common\empire total war\data it will ask you to replace the patch2.pack file just copy and replace it and you are good to go.