FSI (Foreign Service Institute) language courses were developed by the the United States government and are in the public domain.

They can be a very useful learning resource, similar to the read, repeat, use that can be found with pimsleur language tapes.

A very useful website were the following languages can be found:
Amharic
Arabic
Cambodian
Cantonese
Chinese
Finnish
French
German
Greek
Hebrew
Hungarian
Korean
Portuguese
Spanish
Swahili
Swedish
Thai
Turkish
Vietnamese

is http://www.fsi-language-courses.com/

Enjoy!

Brilliant link thanks! Seen these language courses sell on the internet for $thousands of dollars.

Interesting to see that they were public domain. A great resource, thanks for sharing