Fluffy, you are completely right,
My apologies, you deserve it and i have done right now.
Sorry for this mistake, it will not happen again.
If you want me to take out the music from the game, just say the word.
Thank you!
It’s fine to keep the music in, just remember that unless someone has explicitly given you permission you need to ask first.
There is plenty of Creative Commons music out there that you can use although if you do that you need to make sure to follow its license. I have an article about that at https://beesbuzz.biz/articles/6910-Creative-Commons-summarized - for what it’s worth, the music you used is now available as by-nc-sa (although it wasn’t yet at the time that you put it in your game), but since your game isn’t also by-nc-sa you still need to ask permission first.
Understood, I promise this will not happen again, it was a great mistake, I was sure don't know why that I've sent a message somewhere asking for, but as I cannot find it, it was just on my mind.
I love the way your music fits with the game, but as I did not asked for permission first, I've already changed it, it's not the same, but this is the way I will learn this lesson, and also it's my way to deeply apollogize.
Next time, I will ask gently, as you have been with me, if I can use your music.
Until there, thank you!