Total Duration of Playlist in VLC Player?

In case you still can't locate it:

As of VLC version 2.1 for Windows and Linux, you can see the total playlist duration next to the playlist menu item on the left side-bar in the playlist view.

(I just spent a few minutes trying to find it!)

VLC version 2.1.2 on Win 8.1

Here is another VLC Player extension to display the total playlist duration: github: bentrevor/vlc-extension.

Once installed, on OS X, it works/looks like this:

This script may be of interest to you. It is supposed to enable total playlist time in VLC. Also worth a look is this forum post.