Offload audio files only

Hi @deliciousbrains

Same question.

I’ve added these codes :

function allowed_mime_types( $types ) {
		// Disallow offload of png.
		unset( $types['png'] );

		// Allow offload of PDFs.
		$types['pdf'] = 'application/pdf';

		return $types;
	}

to function.php file to prevent .png from being uploaded to s3 , but it still not work , images with .png still be offloaded to s3 bucket.

Which step did I missed?