The California-based company launched its mini music player on October 23, 2001 and has never looked back as sales of the trendy gadget have continued to skyrocket.
Coupled with its online iTunes music, video and movie store the iPod has grown into a thriving "ecosystem" of hip hardware, easy-to-use software and trendy media content, said analyst Tim Bajarin of Creative Strategies.
"They basically turned the iTunes store into a one-place-to-shop content store for next-generation media," Mr Bajarin said.
He predicted new iPod innovations that included mobile telephone capabilities and larger screens for enhanced movie viewing.
Apple's iPod has had a "halo effect" boosting sales of the company's Macintosh computer line.
"I expect Apple to leverage that marketing idea dramatically over the next three years," Mr Bajarin said.
"They are going to invade our living room and extend the Mac experience to other devices in the house."
Apple shipped over eight million iPods during its fiscal fourth quarter, marking a 35 percent increase in such shipments over the year-ago quarter, according to the company's earnings statement released last week.
"This strong quarter caps an extraordinary year for Apple," the company's chief executive Steve Jobs said last week, noting that the group had sold over 39 million iPods during the past year.
The sleek little music player has already become the "first cultural icon of the 21st century," according to Michael Bull, a media lecturer at Britain's University of Sussex, who is researching the social influence of the iPod.
Apple has shored up the music player's popularity and ease of use by making it compatible with Windows PCs, and in 2003 the company launched its iTunes online music store enabling iPod devotees to download their favourite hits.
Zune looms
However, industry competition is mounting, and software giant Microsoft announced in September that its Zune MP3 music player will hit US stores on November 14 as it seeks to challenge iPod's grip on the lucrative market.
"Even though Microsoft is bringing Zune out, I believe Apple will have a smashing year-end quarter because the newer iPods are even better priced," Mr Bajarin said.
South Korean electronics giant Samsung has also started marketing its own MP3 player called the YP-Z5 in a bid to challenge Apple's dominance over the music-player market.
Poddie appeal
Part of the iPod's success can be attributed to its size, the smallest model easily fits in a shirt pocket, and its hefty memory which allows owners of the larger models to store up to 20,000 songs.
Its international appeal was also helped by the fact that Apple designed the iPod's menu in multiple languages, including Japanese.
Indeed, the iPod has become so ubiquitous that Mazda, General Motors and Ford recently teamed up with Apple to provide iPod-compatible equipment in their cars.
Popular with students and young hipsters, iPods have, however, been snapped up by Britain's Queen Elizabeth II and US President George W. Bush, according to media reports.