Open the Developer Tools (F12), navigate to the Console tab, and paste the script.

MP3 Link Catcher.js

const observer = new PerformanceObserver((list) => {
    list.getEntries().forEach((entry) => {
        if (entry.name.toLowerCase().endsWith('.mp3')) {
            console.log(entry.name);
        }
    });
});

observer.observe({ entryTypes: ['resource'] });