For those wanting to review Apple's quarterly numbers in full, Apple's SEC 10-K Filing is now available online. In one area, Apple states that the "Company’s digital content services have faced significant competition from other companies promoting their own digital music and content products and services, including those offering free peer-to-peer music and video services." Apple will be try to remedy some of that problem with iTunes 11 and an all-new online radio service business in the first half of 2013. Then again, Microsoft's new Windows 8 and related mobile devices will be promoting their new Xbox Music service and so iTunes will continue to be under pressure.
Here's the Source where you can obtain Apple's full 82 page filing.