Download mp4 undownloadable from mixcloud. Not so lawful, use with care.

dl-mixcloud.php

<?
/**
 * Prints the 'wget' cmd you must run into a shell in order to direct download the mp4 track
 * @author Mirco Babini <mirkolofioⓐgmail.com>
 */
$uris = array ('http://www.mixcloud.com/a-long-track/on-mixcloud/');

$cmd = '';
foreach ($uris as $uri) {
	list (,,,, $filename) = explode ('/', $uri);

	$dd = get_mixcloud_ddownload ($uri);
	if ($dd === false)
		continue;

	$cmd .= "wget -c -O {$filename}.m4a {$dd} && ";
}

echo substr ($cmd, 0, -4) . "\n";


function get_mixcloud_ddownload ($uri) {

	$parsed = parse_url ($uri);
	$path = $parsed['path'];

	$html = file_get_contents ($uri);

	$ltarget = 'data-url="'. $path .'"';
	$starget = 'data-preview-url="';
	$etarget = '"';

	$lpos = strpos ($html, $ltarget);
	$spos = strpos ($html, $starget, $lpos) + strlen ($starget);
	$epos = strpos ($html, $etarget, $spos);

	$preview = substr ($html, $spos, $epos-$spos);
	$parsed = parse_url ($preview);

	$pre = 'http://stream';
	$post = '.mixcloud.com/cloudcasts/m4a/64/';
	list (,, $path) = explode ('/', $parsed['path'], 3);
	$path = str_replace ('.mp3', '.m4a', $path);

	$found = false;
	for ($streami = 0; $streami < 30; $streami++) {
		$supposed = $pre.$streami.$post.$path;	
		$headers = @get_headers ($supposed);
		if ($headers[0] === 'HTTP/1.1 200 OK') {
			$found = true;
			break;
		}
	}

	if ($found) {
		return $supposed;
	} else {
		return false;
	}

}