Good news and bad news, I guess. The bad news first--most everything is going to pay per listen, especially in England. You'll be hard pressed to find a English Premier League match that is not pay per listen. Now the good news, there are holes. The BBC broadcasts a number of matches, often through their local affiliates (BBC London, BBC Wales, etc) that don't always rights restrict the broadcasts. In addition, a number of non-EPL matches, like the FA Cup, often come through in the clear.
In other countries, you'll have much better luck. The French league is on, the Bundersleigh always have a few games, and you can get darn near every Scottish game if you want. We'll know more about Italy and Spain shortly, and if you look through our database occasionally you'll find something random down in South America or Sweden or something.
We are always on the lookout for new feeds. Let us know what you find.