Y'know, I hate to rain on anybody's parade here, but half the creatures/monsters/races/etc in this mod are not covered by the OGL and/or are "Product Identity" (i.e. 'core property') of WotC.
'Product Identity' creatures:
beholder
gauth
carrion crawler
displacer beast
kuo-toa
githyanki
githzerai
slaad
umber hulk
yuan-ti
illithids/mind flayers
all of the named gods in the pantheon but not necessarily their features/portfolios
The NAME "Baatezu" and the NAME "Tanar'ri" but NOT the subclasses of creatures they represent (Devils and Demons, respectively) are Product Identity
Not covered by OGL license:
anything from WotC books which does NOT have a yellow/orange background on the text, and anything from WotC or TSR books which is NOT also listed in the SRD. Also ANYTHING from most 3rd party books.
Also, afaik ALL of the monsters in the later WotC books such as the ash rat are at least NOT released under the OGL (with a few exceptions highlighted in yellow/orange in those books).
Hence, what you guys are doing is very much susceptible to a nasty cease-and-desist letter from WotC lawyers.
If you want a good list of stuff you're ALMOST free to do whatever you want with, look for the DnD 3.5 SRD document. Also search for other OGL content online, a great place to look is http://www.d20srd.org/
The D20 Modern MSRD is fine too, but has less useful stuff for a fantasy game like DF: http://www.wizards.com/default.asp?x=d20/article/msrd
But remember, using any OGL content requires some slightly irritating stuff like displaying the OGL (and d20, which is irrelevant here) licenses before the game can start (though adding this in an installer probably covers that base).
See: http://www.wizards.com/default.asp?x=d20/oglfaq/20040123f
Also: You can avoid product identity by using other creature variants from alternate sources (you're susceptible to THEIR licenses though) such as floating eyes (and floating-eye-kin), psionic tentacle beasts, half-nagas/half-snake-people, fish-men, etc.
Just letting you know.
P.S. It MIGHT be a good idea to remove all 'violating' content from this thread entirely, to prevent any sort of legal action against the forum itself. I'm personally not going to report this stuff to anyone, but you never know when someone else might.
Of course, I could be wrong about that, but I'm still fairly sure that WotC frowns upon unlicensed use of their property.
LN
[ March 10, 2008: Message edited by: Lord Nightmare ]