It would be great if the Music would be in a separate folder which one could fill with Music of ones choosing, like in Silent Hunter 3.
I liked the HOI 3 music, but after over 200 hours of play it does get repetitive.
I always turn off the music and play Spotify in the background. Works fine and you don't have change a thing. Or you can play any other music program in the background of course.
On a sidenote I do love the music that came with the game, but after a couple houndred hours I preferer some more variation