Hello, thank you so much for playing. I'm really happy to hear you like the soundtracks!!
Those are original soundtracks made by zensen, which I commissioned for the game, therefore they are, for the moment, not available anywhere than in the game.
The only soundtrack you can listen to is the one from the Playtime Scene, which is a free to use track: Dancing With Congress.
The other soundtrack you can listen to for free is the one in the park/last scene it is free-to-use on Pixabay.
Thank you again for your interest!