Spanish accents Argentina vs Mexico

This video has been made by a lovely Spanish school located in Chicago called Latin American Language Center (http://www.lalcenter.com/)
It was filmed by my great friend and employee Elvia. Mara on the right is from Argentina (me, the owner of the school) and Kenia on the left from Mexico.
We want to show in this video the pronunciation of the "ll" in Argentina and in Mexico.
We talk like that in Argentina and in Uruguay basically. Two beautiful countries in South America.