Although in this day and age of MP3, AAC, and OGG the audio CD feels a bit retro, it's still one of the most popular media formats of all time. As any audio purveyor will tell you, a solid collection of audio CDs can represent considerable investment in time, energy, and emotion.
In this chapter, you will use two web service providers to build an online catalog of audio CDs (and as a by-product, calculate the list value of the collection).