Rockbox

If you love your iPod, but wish it just had the one something extra..Rockbox might be for you. Rockbox is open-source software that replaces the firmware on your iPod. With almost daily updates, and a dedicated following, Rockbox might be just what you are looking for!
rockbox.org
rockbox CNET review
via lb

May 5th, 2006 at 10:19 am
I used Rockbox back in the day on my Archos 5GB mp3 player. It is pretty sweet.
May 5th, 2006 at 10:46 am
Can you get the original firmware again, if you change you mind?
May 8th, 2006 at 11:48 am
I don’t remember on the Archos, but on the iPod you can use the software updater to reinstall the old Firmware.
May 8th, 2006 at 1:17 pm
That was quite a risk you took then