[coakiddo]

Код:

public OnPlayerStateChange(playerid, newstate, oldstate)
{
        // If the player exits a vehicle
	if(oldstate == PLAYER_STATE_DRIVER || oldstate == PLAYER_STATE_PASSENGER) 
	{
	    StopAudioStreamForPlayer(playerid); // Stop the audio stream
	}
	return 1;
}

From Wiki