If you're on the lookout for free material to fill your iPod and practice your Thai listening skills, take a visit to thaicr.org, Thai Community Radio. All downloads are in mp3 format.
The catalog is truly expansive. There's a daily 30-minute program called โลกของเรา ("Our World"), covering public interest stories around the globe. The audio archive for this program alone go back nearly two years, which means many hundreds of episodes.
Another long running series is เส้นทางสู่ประชาธิปไตย ("Road to Democracy"), a weekly hour-long program which is up to nearly 250 episodes.
In addition, there are hundreds of other radio documentary programs, sometimes in shorter series, many times in single episodes.
In all, there are more than 1000 free mp3 programs on this website. Wow.