Mine is version 1.4.9.70 and I have a similar problem. In my game only the Rumbler for Slavs can't be played anymore. I ask the guy, he aggrees and then nothing happens, the music doesn't change.
Another problem happens with the music that plays when you first arrive at Sentinel Island (the one that plays while you're outside), it has a ugly gap at about 45 secs. Seems that the file is corrupt, which is a shame since it's one of the best musics in the game.
