While some learn most efficiently by reading books and using flashcards, others are more attuned to aural learning (just a fancy term for learning by listening).
For these people, using an audio CD or MP3 program is one of their best bets for becoming fluent. It’s also a great way to practice speaking the language by responding to audio prompts.
In fact, for people who learn best by listening, using other methods can be quite frustrating!
So if you know you’re an aural learner, don’t worry—there are plenty of resources out there for you, even if your brain is a little slower than when you were three years old.