Sonyinsider writes:

"Sony"s Contrast* Flex OLED Walkman is bracelet style with other form factors possible. We were able to catch footage of its introduction video at Sony"s exhibit during CES 2009. Essentially, this product allows visualization of music while expressing the owner"s personality. The Walkman would be made of high performance flexible bioplastic, which enables the marriage of form and functionality. This is a music player that could happen in five to ten years, according to chatter overheard at CES. We have no idea if Sony is going to stay this course, but it is being prototyped in Sony labs so its a good indication that yes, we will have something very similar to this one day. We can assume that such a slim, almost paper thin design like this would be most certainly possible considering flash miniaturization and wireless headphones capability. Enjoy."