when you buy a download you are also purchasing a license to this original instrumental beat and you have royalty free non exclusive rights to use it for any purpose (except for reselling it as an instrumental yourself.) production credit is not required.
the tracks on this set aren't as loud as some others you may hear but this is by design. I didn't want to crush the instrumental beats to make them super loud because there needs to be room left for the vocalist/rapper to add their voice/lyrics before final mastering. the beat is there to serve your lyrics.
if you make use of one of my instrumentals you can send me a link and I'll share it on my Facebook wall (you can also contact me through Facebook) www.facebook.com/eathiphopbeats