What does "I'm Alex a friend of his." mean in English for Spanish?

In English for Spanish, "I'm Alex a friend of his." means:

Soy Alex, un amigo suyo.

Listen to "I'm Alex a friend of his.": (If you have an HTML5 enabled browser, you can listen to the native audio below)

This is a phrase that is used in the GamesForLanguage English for Spanish Language Game in the following scenes:

• English for Spanish 4, Level 1, Scene 1