Train Fever offers comes along with background music in the game that you can change by yourself on demand.
The game music is located in the following folder: (Train Fever \ res \ audio \ music)
Supported audio format:
TrainFever music files are using the OGG codec. As most of us got MP3 files you got to transform them from MP3 to OGG format.
Therefore are plenty of available freeware tools available, for example: XRECODE.
To switch between the tracks in game you got go click on (main) menu in the up right corner. There are a "play/pause" button, "skip fwd" and "skip rwd" buttons. You can also adjust the volume there.
(basic article was written by TrainFever User Dahara (klick)