title: Regex to get all links to .mp3 files
body: <pre><code>$regex_pattern = "((https?|ftp|gopher|telnet|file|notes|ms-help):((//)|(\\\\))+[\w\d:#@%/;$()~_?\+-=\\\.&amp;]*)";
  </code></pre>
  
  <p>This code gets all HTTP links but I only need .mp3 links</p>