There are many websites with some of the DLI/FSI materials. Many of them try to "make money" with this free material. Some though do provide work on the material like re-recording of the old audio, re-formatting of documents. I'll put the links I know or find during my researches, but be careful .. don't pay for something which is free of charge on other sites.
Many sites use the FSI/DLI material as hook to take you to "not so free courses..."