ROCKBOX - OPEN SOURCE JUKEBOX FIRMWARE
http://www.rockbox.org/ 



Presently works on
    * Archos: Jukebox 5000, 6000, Studio, Recorder, FM Recorder, Recorder V2 and Ondio
    * iriver: H100 and H300 series
    * iriver: H10 series
    * Apple: iPod 4th gen (grayscale and color), 5th gen (Video), Nano and Mini 1st/2nd gen
    * iAudio: X5 (including X5V and X5L)
    * Additional models are in development 

Reach me  at ksmurf [at] gmail [dot] com if you have any questions or comments