The honeymoon was nice while it lasted -- Apple's digital-music honeymoon, that is. This week Richard Branson jumped into the game with an announcement that his Virgin constellation of airlines, cell-phone networks, and media stores would soon add a digital-music business to the portfolio. Virgin is the first potential challenger with branding moxie that can match even Apple's. The group, which posted revenues of $7 billion in 2003, also has far better natural distribution channels for digital music than Apple. The upshot? Steve, get ready to face the A-team. For the last 29 months, Apple has been the uncontested champion of this nascent and increasingly lucrative field. Its iPod digital-music player, introduced in late 2001, is the runaway leader, despite premium pricing. Industry analysts have pegged the iPod as reaping over 55% of all money spent on digital-music players since Jobs & Co. launched the device in 2001. In the fourth quarter of 2003, Apple sold a whopping 733,000 of these little beauties, bagging $256 million in gross sales. The pace at which iPods sold is up 216% as of the last quarter. Apple has turned these diminutive devices into a juggernaut, churning out well over $1 billion in sales per year. That's not including results from the new and smaller iPod mini. Unveiled in January, 2004, it has already sold out after scant weeks on the market. The iPod's triumph has come, in part, thanks to the success of Apple's iTunes Music Store, an online music bazaar that works on both Windows and Mac machines. The iTMS has won kudos from consumers for its ease of use and from the recording industry for finally finding a way to get customers to pay for music online. The tight integration between the iPod and iTMS has helped Apple create a nearly seamless user experience. That's always been Apple's argument -- software and hardware should be tightly linked. And it has been proven correct thus far in the iPod story. The entry of Virgin's online subsidiary, Virgin Digital, might change all that. Branson, chairman of the British conglomerate, is a master marketer. He has brought hip and fun to stodgy fields such as airlines (preflight massage, anyone?) and mobile-phone service (who else offers personalized daily predictions from cartoon character Sponge Bob Squarepants?). True, he flopped with the introduction of a soft drink, Virgin Cola. But overall, Branson and his irreverent marketers have had a golden touch, particularly when it comes to reaching younger demographics. Virgin's cell-phone service has effectively targeted teens with its the pay-as-you-go model. As more and more cell phones double as music players, Virgin holds an enviable position. It can easily begin to offer downloadable tunes through rapidly improving technology that can beam relatively fast streams of data directly to cell phones. Those same cell-phone teens buy a significant chunk of the CDs sold today. So they could likely be turned into online music buyers without too much trouble. Virgin's 23 music stores across the U.S. already serve millions more customers than all the online music stores combined. Add on Virgin's hundreds of stores in Europe, and you have a global music powerhouse. "You look at all the users of digital downloads, the numbers are still very small compared to traditional brick-and-mortar retail," says Zack Zalon, president of Virgin Digital. All of these customers could be pitched with the new service, as well as Virgin's expanding line of personal electronics devices. Currently that line, called Virgin Pulse, includes no serious iPod competitors. That could change in the next year or so. Virgin plans to add to its lineup a new personal music player that will more closely compete with Apple. Business Week