Hey Steg Game Dev,
Apologies for the time it took us to respond as we were on holidays.
You are allowed to use any of our products in a transformative manner; like as part of a musical piece, or a video game, and then sell that transformative product commercially. You are not allowed to resell our products alone, or claim to hold the intellectual rights to our products.
I hope this has answered your question! You can view the supplied licensing agreement for more information.