LifeProof iPhone 4s Case Headphones?

I'm getting an iPhone 4s tomorrow and I'm planning to buy a LifeProof Case as well. I absolutely love music and spend a lot of time listening to it. I heard that you need an adapter to use headphones with a LifeProof Case? Is that true? Where can I buy one? What do they look like? Is the LifeProof Case worth it?
10 POINTS TO ANSWER.

Yes you do