I've been pronouncing it tow/tao fen NOKKT, emphasizing the n and the ch. I pronounce the last part like an Irishman saying ach! But that's just me.
Consequently, this brings up something I wanted to note briefly. For the lizardfolk I've used the convention that their reptilian mouths might not have functional lips as humans do (since so far as I know, mammals are the only ones that tend to have fine motor control with their lips, whereas reptiles are rarely able to even part their lips to bare teeth, most have to actually just open their mouth. Thus for Kohl'Tass names (such as Rrahask Sshasaar, "Venerable Mother") I've figured they don't use the letters B b, F f, M m, P p, and V v. The sounds produced by these letters in speech (at least in English) require the use of lips to varying extents, whereas other letters in English require only the use of tongue, teeth, and the roof of the mouth. So avian creatures (or any with beaks, rather) likely cannot produce the sounds of the letters B, F, M, P, or V. Lizardfolk slightly resemble crocodiles, with their strong, jutting jaws (though weak by comparison to crocs), so I figured their speech either doesn't use these letters or uses substitutes. Dunno if this convention should extend to the Draconic language in general, and the Auran language moreso, but it's possible.
For the Orrukarn language of Ar'kesh, I figured it uses the full range of letters but primarily emphasizes certain sounds, like rolling R's, A's, O's, N's, K's, and L's, but not excessively. It would be somewhat harsh and hard-sounding, but much more refined than the older Gnoll language (which sounds more like barking, baying, growling, and yipping than actual speech). The Orrukarn language would roll off the tongue somewhat, but interrupted by several hard consonants and pauses, with many words possessing a dash - or apostraphe ' indicating either a composite word or a strong attachment of adjective/pronoun to a noun.
For instance, the next NPC I mention will be a fellow I put in the Rules/Crunch of Eyros thread recently, Drokarizaan mal-Viresshti Kaltremos Farizhuur, a highborn gnoll of Orrukar. The mal-Viresshti begins his list of family names, Viresshti as his mother's family name (mal- denoting "born to the bloodline of" in Ar'kesh), Kaltremos his father's family name (less important as he only provided the seed, and Orrukarn families are matriarchal), Farizhuur denoting that he is of the twenty-third such combination of those families (the twenty-third time a Viresshti woman and Kaltremos man made a family and produced children). I noted in the Orrukar post that the Orrukarn are highly inbred over the centuries/millenia, but maintained health through arcane and psionic manipulation in pregnancies.