Apple has unveiled its third-generation iPod portable music players.
The new devices are capable of holding up to 7,500 songs and, according to Apple, are "lighter and thinner than two CDs".
The iPods will be available from the second week in May in three versions: a 10GB model for £249, a 15GB model for £299 and a 30GB model for £399.
Each unit, which can be docked with a Mac or Windows PC, includes an audio line-out for connection to a home stereo or powered speakers.
The devices have a playtime of around eight hours of continuous music, and recharge automatically whenever connected to the Mac or PC.
Apple's 'On-The-Go' application allows users to build a playlist on their iPod and create a customisable main menu to move the features they use most frequently to their top-level menu.
"The competition hasn't even caught up with our first-generation iPod, and we're introducing our third-generation," said Apple chief executive Steve Jobs.
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