Yes if you own it, go to your orders page https://sfrbeats.com/orders and click on the order, then click "Cancel License" (link above the list of tracks at the right) - it will ask you to confirm, then you can go to the beat from the website as normal, add it to your cart, and select one of the other Exclusive options (mp3 wav track out). Checkout, and you'll own the rights without paying anything else in the future!
If you are not the one renting the beats, you'll have to wait an indefinite time for the current renter to release the track. For privacy reasons, we cannot disclose who is renting a track. Other options are to make a request for a similar beat to be uploaded. Contact us with this regard.