If you invite a friend to Tracklib that's not already a user at Tracklib, the person invited get a specific free track! Once they've signed up, you'll get one credit which you can use to purchase any track for free. You can invite as many friends as you like, each of their signups will earn you one track credit.
Remember to tell your friend to use the signuplink with your invite key. Just copy the link from your referral page by either going to Profile, then referrals. From there, use "Copy link", or share it directly via Facebook or Twitter. You can also invite a friend by email.
If you have any questions, please contact Tracklib support by emailing firstname.lastname@example.org