It's something I feel sad about: the soundtrack does not contain the music that can be used for rides and speakers. I really like the soundtrack, but I also love most of the ride music and would really love to listen to them outside the game. This is something that I really liked doing in RCT3 where the game just had a number of tracks which could be heard in the main menu, in game when zoomed out, as ride music, and on speakers. And I continue listening to that music.