Open your Combat Arms folder
-Open the "Game" folder
-Open "BGM" folder
-Replace the audio "BGM_LOOP" with the song you want in the same spot
-Then rename your new song "BGM_LOOP"
Make sure its the same name "BGM_LOOP" or it wont load it.
I'm sure a lot of people know about this but I'm just helping out those who don't.
I've changed the songs many times with no problem, listening to the same thing all the time gets old. lol
This is just a quick leech, No credits to me