How to get all of the entertainment content you want onto your iPhone. If you live in Japan, have a free pocket, and don't mind shelling out the ¥14,800 ($191), Panasonic's Pocket Server DY-PS10 should do the trick. The handset-sized device can stream content from its built-in SD card slot to your iPhone / iPod touch via a wireless connection. The Pocket Server can handle H.264 files, JPEGs, and MP3s, and the battery should give you about 10 hours of playback. The device will go on sale September 15th in Japan.
Engadget, Panasonic's DY-PS10 Pocket Server streams music to your iPhone, fits in your pocket as advertised
