The Mac and iPod slices shrank between '08 and '09. iTunes grew a bit. iPhone grew a lot.

Source: Company reports

Steve Jobs likes to describe Apple's (AAPL) business model as a stool built on three-legs: the Mac, the iPod and the iPhone.

But a quick glance at the 2009 Form 10-K, which Apple filed on Tuesday, shows that it is now more like a four-leg chair, with a couple of wedge-shaped pillows on the side.

The Mac and iPod still bring in the biggest part of Apple's total sales revenue — 37.7% and 22.1%, respectively — but their shares of the pie are shrinking.

The iPhone, meanwhile, is rapidly catching up, thanks to unit sales that grew 78% and GAAP revenue (swelled by deferred revenue dating back to 2007) that grew 266%. The iPhone now accounts for 18.5% of Apple's sales, just behind the iPod.

The fourth leg of the chair is the line item Apple calls "other music related products and services" but which is mostly iTunes Store sales — music, video and apps. It continues to grow at a steady pace and now represents about 11% of Apple's net sales.

Spreadsheets summarizing Apple's revenue streams are pasted below the fold. Apple's 2009 Form 10-K is available as a pdf file here.

[Follow Philip Elmer-DeWitt on Twitter @philiped] More

Online jukebox Lala hooks up with Facebook and Google. Together, can they mount a serious challenge to Apple?

Lala's Nguyen aims to challenge Apple's iTunes. Photo: Lala

Apple rules music retail for now: iTunes passed Wal-Mart (WMT) last year to become the top-grossing music store in the world. But that doesn’t mean things will stay that way.

The latest challenge to iTunes comes from Bill Nguyen, the serial entrepreneur who founded Lala.com.

Palo Alto-based Lala is an online jukebox with 8 million songs; you can buy the rights to stream a radio-quality version of any song for 10 cents or download a higher-quality version for 99 cents. He says he’s averaging about $67 per year from paying customers.

By itself, Lala poses no threat to the iTunes juggernaut. But now it’s teaming up with Google (GOOG) and Facebook, arguably the two hottest properties online. Late today Google is expected to announce a partnership with Lala that should drive massive amounts of new traffic to the service.

And just last week, Lala announced that it will team up with Facebook and its 300 million users to push a new form of music distribution: song gifting. Soon, Facebook’s legions of social networkers will be able to do more than chat, update and poke — they’ll be able to buy each other songs, right within Facebook’s payment system.

We caught up with Nguyen soon after the Facebook announcement to ask about his vision for digital music, and why he dares to take on iTunes and Apple (AAPL).

Fortune: What’s the elevator pitch on Lala. What business are you in? More

Photo: Apple Inc.

Apple (AAPL) tends to score well in Piper Jaffray's "Taking Stock With Teens" reports, but the results of PFC's 18th semi-annual survey, released Tuesday, suggest that American teenagers are growing even more loyal to the Apple brand.

iPhones, iPods and iTunes emerged as clear winners in the Minneapolis-based brokerage house's study of the music and cellphone buying preferences of some 600 middle-class and upper middle-class teens.

"It's really a story about Apple," said Andrew Murphy, representing Piper Jaffray's technology team. "Apple continues to dominate."

Among the findings: More

Eminem. Photo: Imagine Entertainment

The dispute was over money, and like most civil cases, this one was settled out of court.

After five days of trial in a Detroit federal courthouse, Apple (AAPL) and Eminem's publisher, Eight Mile Style, came to an agreement Thursday night that neither side wants to talk about, according to the Detroit Free Press.

At issue were royalties on 93 songs that Apple has been selling on its iTunes music store under an agreement with Dr. Dre's Aftermath Records, which controls the rapper's sound recordings.

As Eminem's music publisher, Eight Mile Style had claimed copyright infringement. It was seeking to recover $2.58 million — its estimate of how much Apple has earned from sales of the music — as well as damages, which it set at $150,000 per infringement, or nearly $14 million.

Eminem, whose real name is Marshall Mathers III, was not officially party to the suit and did not appear in court. More

Source: Apple Inc.

Steve Jobs likes to wait for nice round numbers before he announces his milestones, and on Monday Apple (AAPL) hit a big one: the 85,000 apps in the iPhone App Store have now been downloaded more than 2 billion times — a number Jobs described as "staggering."

"The rate of App Store downloads continues to accelerate," he said in a prepared statement, pointing out that more than half a billion apps were downloaded in Apple's fourth fiscal quarter alone.

He's right about the acceleration, but judging from the slope of the curve above, it's not quite as dramatic as he makes it sound.

It took Apple 74 days to rack up these half billion downloads, and 82 days to get the previous half billion.

Put another way, users were downloading apps at the rate of 6.1 million a day between April 23 (when the App Store hit 1 billion) and July 14 (when it hit 1.5 billion), and the rate of 6.7 million a day between July 15 and Sept. 26, a 10% increase.

Impressive, but given how many customers Apple has added in the past quarter, maybe not staggering.

Among the other numbers Apple announced Monday: More

Photo: Aftermath Records

[UPDATE: The trial has begun. See below.]

Barring a last-minute settlement, Apple will face Eminem's music publisher in a Detroit courtroom this morning.

At issue are royalties on 93 songs that Apple (AAPL) has been selling on its iTunes music store under an agreement with Dr. Dre's Aftermath Records, which controls the rapper's sound recordings.

Eight Mile Style LLC, Eminem's music publisher, claims copyright infringement and is seeking to recover the $2.58 million it estimates Apple has earned from sales of the music plus damages, which it set at $150,000 per infringement, or nearly $14 million.

Apple had hoped to cut a deal — and avoid a trial — in private settlement talks supervised by U.S. Magistrate Judge Virginia Morgan. But those talks broke down Wednesday night, according to the Detroit Free Press.

The non-jury trial was scheduled to begin at 9 a.m. ET in the courtroom U.S. District Judge Anna Diggs Taylor. It's not clear whether Eminem, whose real name is Marshall Mathers III, will testify.

The dispute dates back to July 2007, when Eight Mile Style and Martin Affiliated sued Apple, alleging that digital rights to Mathers' songs were sold without their approval. A copy of the suit is available here.

The music publisher had previously sued Apple for unauthorized use of his hit single "Lose Yourself" in an iTunes TV commercial. That dispute was settled out of court.

UPDATE: Courtroom reporting from the Detroit News: More

Tyrese Gibson's Mayhem is a comic book – the first standalone print publication for sale in Apple's iTunes LP format.

Tyrese Gibson’s Mayhem is the first digital book for sale on iTunes 9 – perhaps an early sign of Apple’s (AAPL) desire to take on Amazon’s (AMZN) Kindle and Sony’s (SNE) Reader in the digital book market.

I would have missed the significance of Mayhem on iTunes if I hadn’t run into Gibson himself on Wednesday. After the Steve Jobs iPod keynote, I spotted the actor/singer known for roles in action movies like Transformers 2 in the demo area where attendees were playing with the new iPods and software. He had a laptop open and was doing a few TV interviews about his Mayhem project, and its debut on iTunes.

Gibson isn’t the first person you’d expect to make a mark in the comic book business. For one, he’s not a longtime comic book fan – he only recently got interested in the medium while attending the Comic-Con convention to promote the movie Death Race. After seeing the devotion of die-hard fans there, he was determined to get in on the action – and he conceived of Mayhem, a vigilante tale with a diverse cast of characters. More

The view from inside the Yerba Buena Center for the Arts. Photo: Jon Fortt.

Will we get new iPods with video recording? Will Steve Jobs show or won't he? Refresh this page during the event for live updates. It all begins at 10 a.m. PT, 1 p.m. ET. The presentation is about to begin.

Steve Jobs walks out on stage to a standing ovation. He clearly appreciates the reception. He still looks quite gaunt — much like he did before he took his leave. Applause lasts a good 45 seconds.

He says he has the liver of a person in his or her mid-20s who died in a car crash and donated organs. He asks everyone to consider organ donation. He thanks the Apple community, and Tim Cook and the rest of the Apple executive team.

Steve Jobs announces sales of 30 million iPhones. More