server {
    listen 80;
    server_name  localhost;

    # Where your assets live
    root /usr/share/nginx/html;
    index index.html;

    # ---------- Default site (HTML/CSS/JS) ----------
    location / {
        try_files $uri $uri/ =404;
    }

    # ---------- Audio (and optional video) ----------
    # 30-day cache; adjust max-age as needed.
    location ~ \.(opus|ogg|mp3|flac|wav|m4a|aac|mp4|webm)$ {
        add_header Cache-Control "public, max-age=2592000" always;

        # Teach Nginx any MIME types it doesn’t already know:
        types {
            audio/opus   opus;
            audio/mpeg   mp3;
            audio/mp4    m4a;
            audio/aac    aac;
            video/mp4    mp4;
            video/webm   webm;
        }

        try_files $uri =404;
    }
}