StrongVenom

Hi! I went a little bit confused about these policies, and i wanted a straight answer, so i ask it on here. Ok, the question is that can i use some of these remixes at my game? For an example, track like "Reel Big Mario" by JAXX and Kaijin fits on my game very well (Its a Mario Game ). Of course i give a credit to them whose remixes i gonna use. And then other question; is using the tracks free? That i dont have to pay for using them at my project? Sorry if my english is bad, im from Finland.