title: Get full path of currently playing file in mpv
body: <p>Is there a way to get the full path of the currently playing file from <code>mpv</code>, after <code>mpv</code> has been launched?</p>
  <p>I saw <a href="https://stackoverflow.com/a/41780401/9348376">this</a> question but it doesn't show how to get properties, just how send commands.</p>
  <p>Edit: by 'get the full path', I mean from programatically; from another program or a terminal, not by using <code>mpv</code> commands/keybindings on the <code>mpv</code> application itself.</p>