-With the disappearance of AW, the rest of the team has taken over development of TLD. Even though there are a number of us, help is always welcome. If you've got something you think we might want, send it to one of the devs and we may very well use it.
Current jobs:
-Modelling and Texturing work. Contact one of the Devs: Llew, Dablade, Octoburn, Triglav.
-Voice work. Contact DaBlade.
-LOD makers. Contact a Dev.
Models & Textures needed: Large scene props or Full scenes:
A cavern system. Various passages and caves that could be pushed together with the edit mode to create various cavern systems. For example: 3 types of long cave passage, 1 short, 2 types of cavern-ish rooms, etc. With the doors modeled like the vanilla dungeon rooms to make it easy to connect them in edit mode. With this we could generate a variety of cave scenes.
New props and scenes stuff needed:(contact GetAssista for details)
We currently need several props and scenes for the elves, contact one of the devs.
We need all kinds of outdoors scenes on vanilla material. Forest/plain road, river crossing, tended field etc.
Also we need terrain borders with mountains on one side.
Voice Work:(contact DaBlade for details)
Orcs:We need different voice sets for Uruks and orcs. Uruks should sound deeper (I can also edit them to sound deeper).
(for orcs and uruks)
- hit sounds
- death sounds
- taunts, short shouts (for when getting close to enemies), no words needed although some could have words
Victory cries (ideas):
- victoryyyyyyyy haha!
- haha, yeeeeaaaah!
- aaaaahahaha!
- all deeeeaaaad, ha ha!
- oooaaaaah!!!
- master will be pleeeaaased!
- + anything you could think of...
Do not mention Sauron or Saruman; we can't have specific Mordor and Isengard voices anymore due to engine limitations, but we can still have different voice sets for orcs and uruks.
Tark
Ghash agh Burzum (I sort of threw this together, it should mean fire and darkness)
Tark-glob (man-fool)
pushdug (dung-filth)
ska
shai
Other snarls or gibberish.
Death to men
Death
Haradrim:Inka means North, apparently. So if you throw that into your foreign-sounding gibberish, it might add some nerdy verisimilitude
This is an old project I've been working on for our MiddleEarth RPG session, but never finished it. It might be of some use 
Harad languages:
Harondor: - near Harad would use a modern version of the Harad language. The ancient grammar is simplified and old words are mixed with many words from Quenya (Numenorean influence) and words from the languages of Khand.
Great Harad: - people from Great Harad use a much more archaic version of the language with more complicated grammar and they don't use words from Quenya at all.
Far Harad: - primitive language very loosely related to the great Harad language. Lacks complex abstract terms and has a great amount of adjectives.
The pronunciation is very different to english. "o" is similar as in "not", "a" as in "ah", "e" as in "let", "i" as ee or in "lip", "u" is similar to "oo" as in "ooze" or "loop". "R" is sharp and strong like a russian "r", "k" is always pronounced as Tolkien's elven "c". (so it's similar to english k, but sharper and clearer. as in "look" maybe.)
- long versions of the vowels described before. "" is "sh" as in "shoe". "j" is not english j (as in "jew", "juice" etc.), but like "i" or "y" in "yew". "h" is usually silent or half-silent. "ch" is not english as in "chemical", but like a russian or hebrew "ch". (can't describe better :/ sorry)
Harad wordsBattle Orders:
sample of Harad writing: (sorry, it's not exactly calligraphy, I don't have a tablet here)

DwarvesElves generic:Mirkwood:Thranduil
Eryn Lasgalen
Alta Calenryn
Aure entuluva (Day will come again. Hurin cried it as he fought the 70 trolls during Nirnaeth Arnoediad)
Auta i lome' (The night is passing)
Utulie'n aure (The day has come. this might do better as a victory cry for the elves)
Elbereth +/ Gilthoniel
Ecthelion
Aiya elenion ancalima (Both Frodo and the elves in the Shire cried this, along with Elbereth)
Rohan:Forth Eorlingas
Forth Helmingas
Death (debatable)
Theoden and the Mark
Edoras and the Mark
For Theoden
Helm! Helm Hammerhand
Theodred (Or some variation on vengeance for Theodred or the Isen)
Gondor:Gondor
Faramir
Boromir
Ecthelion
Minas Tirith
Dol Amroth
Amroth for Gondor
Filthy beast
Leave no orc alive
Does anyone know any Gaelic warcries? The Dunlendings could use those. After all, at Helm's Deep Gamling had to translate for the others.
Dunland:Death to the Forgoil
Death to the Strawheads
Dunland
Our blood, our land.
*Deep angry yells or bellows* -Berserker style.
Easterlings:Foreign sounding babble, different babble language from the harad. heh.
Dunedain:Elendil
Elessar
Arnor
If you have any ideas, feel free. And if you have any sounds that would work in any capacity, send a copy to Dablade as he's doing the sound stuff.
EDIT: Voice work updated.