http://www.britishcouncil.org/learnenglish-podcasts.htm  

http://www.bbc.co.uk/worldservice/learningenglish/general/

http://podcast.com/show/59291/

Merriam-Webster’s Word of the Day
http://www.merriam-webster.com/cgi-bin/mwwod.pl

  A word root every day

http://podictionary.com/

English as a Second Language

http://www.eslpod.com/website/show_all.php 

http://www.eslbasics.com/