While we wait for Poetry's site to get up and running (and wish her Godspeed in this effort), note that Fat-tony has been posting some of the DLI courses online at file-sharing services. The materials he's been able to upload so far, with the addresses to download them, can be found at this URL:
http://how-to-learn-any-language.com/forum/forum_posts.asp?TID=16633&PN=1Various others have been helping him by posting mirrors.
Also, the DLI Modern Standard Arabic course can be downloaded as a torrent at:
http://www.mininova.org/tor/1590789 and the DLI French course at:
http://www.mininova.org/tor/1593799Having looked at a couple of the courses uploaded by Fat-tony, I'm struck by the fact that the DLI courses, just like the FSI courses, in fact differ a fair amount from one another. The DLI Hungarian course, for instance, seems to be a very complete and detailed course, with a great deal of grammatical explanation. It differs from the FSI course in having more and shorter lessons, so that the learner doesn't have to cover nearly so much material in a given lesson, making it, in my mind, more "user friendly" than FSI's Hungarian course. The Persian course, in contrast, seems to have essentially no grammatical explanation, so that unless you're already pretty familiar with the grammar, you'll likely find it disappointing, except perhaps for reading practice. (Also, the audio that Fat-tony has posted for volume one seems to belong to another, more advanced course in military Persian, rather than volume one of the basic course.
The various Arabic dialect courses seem quite extensive, but appear to assume a knowledge of standard Arabic, as most phenomena in the dialects are explained by comparing to and contrasting with standard Arabic, which I think all DLI Arabic students normally study first.
In short, the DLI materials vary, but strike me as very well-done, except for the Persian one, and well worth taking a close look at.