I didn't find the information about namecoin use with moneychanger, is it just being added as an asset, or there is any other uses for it under this software?
Namecoin can be used to associate your "identity" (Nym) with a key pair (credentials) used to authenticate as that identity. This is optional, though, and there are also other ways to create Nyms that don't depend on Namecoin.
It's actually going to use Namecoin so that Namecoin can fulfil its stated purpose and not be just another altcoin people speculate on.