@Harry Kopy first, all gen 4 Scarletts have loopback, Gen 3, 4i4 and up have it. Open a project and, in your I/o, scroll through the channels - usually 11/12 will say loopback. Then, after making sure your monitor is off so you don’t feed back/ blow your speakers, arm the track, hit record, and start the track you want to record from Amazon, Spotify, or whatever. Probably wouldn’t hurt to google “using Focusrite loopback “ in case I forgot anything. If you have it, once you try it it’s quite easy