The MP3elf is a low-cost Ethernet connected MP3 player that receives a MP3 stream from a local area network server and delivers it to amplified speakers or a Hi-Fi system. You can have a single source of MP3 files in your home or office, and browse through playlists from any MP3elf. The Universal IR receiver allows the MP3elf to respond to one of your existing Remote Controls (or use the on-board pushbuttons) and the LCD interface can display your very own choice of information. The elfServer software design allows compatibility with a range of different front-end options. As it is Java based, it can run on Windows, Macintosh, or Linux machines.

http://mp3elf.net/