It´s not about exclusivity.
You simple gave me the picture that you don´t have any other music. I asked several times what are your plans with music in the game. You said you need 2-3 songs and that´s it because you don´t have any other music. And I gave you 8 to chose from, telling you, that it might be to boring for people if you only have 2-3, so you are welcome to use all my 8 tracks.

And saying you hadn´t planned any other music but changed your plan since you never received my music is ridiculous.
Because you postet your post only half a day after we agreed on my music licensing! You couldn´t even wait until the next day till I send you the download link to my files? Come on. That more sounds like you want to talk your way out of it instead of being honest.

And exactly this gives me a bad gut feeling. And I simply don´t work with someone when I have a bad gut feeling. I have a reputation to lose here. And it took me years and lot´s of work on Hive to build it up.

I agreed on giving you high quality music for free. And I would also have given you more than 8 songs. But getting the full picture and honesty is the lowest price I can expect for this.