Hey everyone,
Just a quick heads up for anyone that does not have their system language set to English. If the path to your steam folder contains any non-english characters, then the game will not be able to access the music files, and when you try to play a song, you might receive a message saying that the audio file was not found.
In order to fix this, you need to make sure that the path to your steam folder doesn't contain any non-english characters. This may involve setting your system language to English temporarily whilst you play.
Sorry for the inconvenience!
Blake.