Right click the page and select "Inspect Element", then go to the network tab. Now, refresh the page with the network panel still open. Wait until nothing is showing up there anymore. While waiting, make sure not to get your mouse near the Listen button. Once nothing is showing up in the network panel, hover and click the listen button. As soon as you hover the listen button, an entry will appear that says "batchexecute". Find this entry. It should be above entries that say log?format=json&hasfast=….

Click on that and then on the right select the "Response" tab. There should be a bunch of random characters that go off the screen very far to the right

Select just that text and copy it. The easiest way to do this is to scroll all the way to the right first and then click and hold to the right of the ending quotation mark, then move your mouse up to the line above, then move your mouse down to reach the starting quotation mark, holding the mouse the whole time.

Go to the console tab and type v= then paste then press enter. Then, paste this into the console and press enter

{
const a = document.createElement("a");
a.href = "data:audio/mp3;base64,"+JSON.parse(v)[0];
a.download = "file.mp3";
a.click();
}

The mp3 file will download.