JuiceBox Picture Player
This uses the same flash card adaptor as the JuiceBox Music Player, but requires that the pictures be in a more proprietary file format. Pictures must be exactly 240x160 pixels, and stored in a raw format using 12 bits per pixel (4 bits for each of RGB.) In addition, the files must have a '.JBP' extension and appear in the root directory of the flash card. Standard procedure seems to be to use your favorite photo editor to produce the 240x160 pixel format, a common open source image reformatter like ImageMagick to produce a raw RGB file with 24 bits/pixel, and one of several special utilities written by the JuiceBox hacking community to convert that to 12bits/pixel.