Now you can carry your mp3 player in your wallet. This is the slimmest mp3 player in the world, a touch thicker than a credit card. Slide it into your credit card holder and the only thing you will notice is your wallet weighs another 16 grams. With four gigabytes of memory, it carries about 2500 songs.  Add the portability of a built-in rechargeable battery, which allows up to five hours of use, and music lovers will be rejoicing. And it is waterproof.

Price: $70. Available in July.
Details: www.cebit.com.au