iPodLinux is an open source venture into porting Linux onto the iPod (http://www.apple.com/ipod/). So far, we have successfully ported a customized uClinux (http://www.uclinux.org) kernel to the iPod, and written a simple user interface for it dubbed podz
Nonetheless, Rockbox sounds better than apple's firmware ... But forget it for now trying to play ALACs, especially if you have edited tags. I have converted all the ones I want to play via Rockbox to FLACs which do fine....The best theme I've found is "b
I highly suggest you get Rockbox. Make sure that you check that your ipod is one of the ones mentioned to work. FLAC is better than ALAC, but if you must, use ALAC.