We all know the iPod is the most successful portable digital audio player on the market today. Apple saw that gap years before anyone else and dominated it with a great product and a slick marketing campaign, now the other companies, Sony included, are just playing catch-up.

Apple though are not resting on their well padded laurels, they’re increasing production of the iPod product, ready to enforce their grip on the market.

Capital Market analyst Craig Berger has recently completed a check on Apple’s products and their NPD sales data. Berger found that Apple are actually decreasing production of their Mac line, but are increasing production of the iPod.

The production of iPods has increased by 15% since March as the iPod Shuffle has accounted for most of the extra units. Meanwhile the iPod Nano and the iPod Classic have witnessed a small boost in production. Production of the iPod Touch has fallen however, which Apple believes is due to the consumer waiting for the new 3G phones.

Mac production has fallen by an equal 15%, showing the shift in emphasis from Macs to iPods for Apple.

The iPhone has seen a slight decrease in production, but just like the iPod Touch this is largely due to the new 3G version that is expected later this year.