And when you play rome total war you listen those songs, Music.idx indicates the start and the end of each song.

If you reprduce the Music file you'll listen a song, and at the end of the song will start another song.

In the folder Data/Sounds there's two files named Music, one that you can reproduce and the other that is the *.idx file. The problem is in the *.idx file, that contains the minutes and the seconds of each music in RTW. I know how to do it, but i have not tried yet