The retailers to which a distributor sells records sometimes have the right to “return” any unsold physical records to the distributor for full credit. The distributor allows this so that these retailers stock more physical records than they otherwise would.

Building a Simple Recording Studio for Beginners
This article contains introductory information on what the basic components of a recording studio are. It outlines the use of the multi-track recorder, the microphone, the studio monitor, the console and finally the mixing console.