I was searching for more legal audio files, they are very hard to find, most websites are asking for the payment. But here is the website that has lots of audio files in different spheres: economics, foreign policy, health, legal etc.
These are recoded sessions of conferences where speakers talk pretty fast but make pauses. It's a great material to practice but I don't think it's for beginners. Free download mp3 files.
If anybody knows other free legal audio files, I would really appreciate.