VLC Podcast Command Line Issue

VLC Podcast Issue
I am working on a project that uses the VLC media player. My project calls VLC via the command line in Windows XP. Using the following command I am able to discover all the new podcats and place them in a playlist:

vlc -S podcast --podcast-urls http://feeds.twis.org/twis/science/

What do I have to add to the command to get VLC to play the newest podcast? Suggestions?