ESL Cyber Listening is a good site. Not only are there more conversations than you can shake a stick at, the topics are practical. I agree that some of the conversations can seem short, but the speed and use of real English works well for lower-level learners.
If you're looking for longer, article-type listening activities, try my website:
Heads Up English (
www.headsupenglish.com).
I have both news-related monologues at about 3 minutes, and longer pieces to focus specifically on listening skills at 4-5 minutes. There is also Voice of America and BBC news for ESL learners at:
http://www.voanews.com/english/portal.cfm http://www.bbc.co.uk/worldservice/le...sh/index.shtml
Although you said you preferred free resources, I've had a lot of success with "Nice Talking with You." It comes out of MacMillan. The book is for developing speaking strategies, but has an excellent CD with speakers having natural, unscripted conversations -- complete with mistakes, redundancy, backtracking on ideas, etc. There's a second book I use as well, which I don't have with me at the moment (and, of course, can't remember the title!!).
Good luck!
Chris Cotter
www.headsupenglish.com