Another gem brought to us by our friends at MAKE, TechDesign proves that they have entirely too much time on their hands, producing their own MP3 player in classic Radio Shack style. The MMC MP3 player was built to read an MMC (obviously), is powered by a single AAA battery and can display ID3 tags while playing songs encoded at up to 256Kbps. Complete schematics and assembly software is available if you’re bold enough to undertake such a project on your own, but this is no simple hack, to be sure. Voice recording will be added later, as well.
DIY MMC MP3 Player [TechDesignBE via MAKEblog]