苹果发布大会
http://itstreaming.apple.com/podcasts/apple_keynotes/apple_keynotes.xml
ABC新闻
http://abcnews.go.com/xmldata/xmlPodcast?id=2937594&src=i
CNN新闻
http://www.cnn.com/services/podcasting/newscast/rss.xml
BBC新闻
http://downloads.bbc.co.uk/podcasts/worldservice/globalnews/rss.xml
NPR新闻
http://www.npr.org/rss/podcast.php?id=1090&uid=n1qe4e85742c986fdb81d2d38ffa0d5d53
白宫发布会
http://www.whitehouse.gov/podcast/audio/speeches/rss.xml