I hate to preach to the converted, but if you are not familiar with the radio program, This American Life, may I suggest you give it a try?

(I just heard their 'Drug Sentencing' show yesterday and the story of the mother of two who, with no physical evidence against her and with no prior convictions, was sentenced to 19 years in prison, broke my heart and boiled my blood. Related site: Families against Minimum Mandatory Sentencing)

For those of you familiar with the show, I'll still suggest checking out their website as they now feature all sorts of neat-o value-additions. Most notable, there is a step by step guide to how to edit your own sound. Another radio show that encourages such participation is Definitely Not the Opera.