Copyrighted Music in Game Dev Tycoon?

I recently just started a playthrough of Game Dev Tycoon on my YouTube channel and these videos are “under review”. I didn’t really turn down the in game music because I though this surely can’t be copyrighted and now I’m thinking it might be. Help please?

Use the SEARCH function before asking this question, there are tons of topics about this and this is the official statement from Greenheart Games:
http://forum.greenheartgames.com/t/youtube-claims-on-the-background-music-in-game-dev-tycoon/9477

You have our permission to create lets play videos and monetize them. Please include a link to our website http://www.greenheartgames.com/
However we reserve the right to revoke, without prejudice, this permission at any given point in the future.

Please note that the in-game music is not licensed for use in videos so please disable the music or use your own.