The Disney Mix Sticks MP3 players feature 128MB internal flash storage and can be expanded to 1GB via an SD/MMC Card slot. Supported file formats are MP3 and WMA (Looks like no DRM support). Battery life is 10 hours. The kids mp3 player connects via USB 2.0.
Currently the Disney online Shop offers the pink Princess Digital Mix Stick for $49.99. I guess for the boys is the silver Mickey Digital Mix Stick which also for $49.99. There will be more Disney Mix Sticks and also accessories.