I am sorry but I can't understand your English and please do not double post.
And if this is all about Race then why is this in the Death Match section?
MTA does not work on the steam version which has the gta_sa executable of version 3.0 only, AFAIK buying another game that's either 2.0 (then downgrade) or 1.0.
I have always wanted this in MTA and infact as you said is very good for RP'ing however there once was a voice implementation in MTA but didn't go very well. I can't confirm if the dev's shall try again someday but AFAIK they don't want to.
Robhol be more specific for the guy
Download the latest Nightly build from the nightly depository from HERE
The data files needed to run the Nightly build can be found HERE
Actually it is server-side. But like I said it runs more smoothly if you just do it client-side in onClientRender or onClientPreRender with the cost of not having it synchronized.
Ah I see very nice!