Since several years now I have this issue and it's bugging me: The combat music sometimes gets stuck and wont stop, if you engage an enemy while having the music stuck the same track will play over the one that got stuck. You have the same music playing at the same time which is totally distracting. Because of this bug I turned the ingame soundtrack off for ca. 2 or 3 years already. I tried a lot of things to fix it but nothing worked so far (reinstalling game, new installation of OS, updating sound drivers).
I see this bug in a lot of videos where the music constantly play even though the player is not even fighting and when engaging an enemy anoter track gets layed over the already playing one.

It's sad to see this bug because AoC's soundtrack is one of the best in games I ever heard - but this bug destroys it all.
Is there any way to fix it by yourself? Or do we have to wait for FC to fix it... well, this probably wont happen...