Elliot was surprised to see that inside the box there were no CDs, but a Walkman that came with some headphones and some cassettes. She wasn't sure if this was the correct box or if the delivery guy had given them someone else's box.
Although Elliott could tell her boss that they had been delivered the wrong box, she decided to keep the headphones. But if she was going to keep the headphones, she had to make sure they worked. So Elliot proceeded to take the headphones and put them on. Now that she had them on, she just needed to insert one of the cassettes into the walkman.
Elliot checked the box again and saw that there were only 2 cassettes, one pink and one gray. Elliot ended up taking the pink one and she insert it into the walkman. And now that the cassette was inside, she proceeded to play the music.