Langalot has a “language lab” full of German language learning resources. The have all the Foreign Service Institute German audio courses, for free. You can listen to the first lesson of each one on the website without creating an account. After creating a free account, you can listen to all of the lessons, or download mp3s. They have the following courses:

1. Foreign Service Institute German Headstart
2. Foreign Service Institute German Programmed Introduction
3. Foreign Service Institute German Basic Course Volume 1
4. Foreign Service Institute German Basic Course Volume 2

Each course also contains a PDF manual.

The United States Government created these courses to teach government officials German. They vocabulary can be a bit embassy specific, but they are good courses and you can’t beat the price!