How do you pronounce X

[EPILEFMAN]

How do you say the letter X in the Na'vi language? eg:
skxawng

How do you say it?

Do you just ignore it?

[omängum fra'uti]

The X is not actually a letter in Na'vi.  The actual sound is represented by px, tx or kx.  this thread helpfully explains how the ejectives like those are pronounced.

[wisnij]

The x is not a consonant in its own right, but rather part of one of three consonants: px, tx, kx.  Those are called ejective consonants, and you can read about them here.

[EPILEFMAN]

Right, thanks!

[Fyawìntxu]

   Kaltxì ma smuktu!

   That's right: in Na'vi, there is no "x".

   There are 3 ejective letters based on "k", "p" and "t". As we don't have in our alphabet any equivalent, Dr Frommer decided to use this unused latin letter "x" to mean ejective when used after one of the 3 letters "k", "p" and "t".

   This way we have the "normally" prononced "k", "p" and "t", and the ejectivly prononced "k", "p" and "t" that we write "kx", "px" and "tx". So "x" is just a transcription sign for us to know when "k", "p" or "t" are ejective of not.

   For the prononciation, stop breathing, and say "k", "p" and "t" (and not with any vowel after) without blowing, without breathing, using only the air you already have in your mouth.

   Kìyevame ma smuktu!

Fyawintxu