I've just bumped into a website and am really excited to share it with you! It is called Audio Lingua and it has over 3000 short mp3 files in 10 different languages, of which 455 are in French!
The files are on a variety of topics (recipes, hobbies, opinion on books, films or TV, etc.). They are authentic materials recorded by native speakers only. These files can be listened to online or they can be downloaded. You can also contribute and upload your own recordings on the website. All you then need to do is create your own teaching materials to go alongside these audio recordings.
Have a great weekend!