What does "I’m happy as well." mean in English for Spanish?

In English for Spanish, "I’m happy as well." means:

Yo también estoy contento.

Listen to "I’m happy as well.": (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 3, Level 1, Scene 6