Apple's revenue from iPod sales in the fourth quarter was $1.21 billion, up from $537 million a year earlier.

All fine and well, except iPod sales peaked in 2008, they've been dropping off since (unit count is off about 10-15% from peak).

's iPod sales have counted for on average for 5 percent of all iPods sold since the deal was originally struck," she said.

By the end, the HP deal accounted for only 5% of Apple's iPod sales.

They might lose some online music sales, but the trade-off of more iPod sales would be more than worthwhile.

But for now, Apple does not appear to mind that iTune's chief financial contribution is that it drives iPod sales.

Apple's iPod sales appear to have disappointed many investors and helped cause the sell-off late in the day.

Steve is more focused on not cannibalizing iPod sales than on driving volume of phones.

As you're probably aware, the majority of iPod sales are made to Windows users, so we have some Windows terminals on our production line.

What's with the sawtooth pattern on iPod sales?