Umm... The iPod's default audio format isn't proprietary... It's a standard... See: http://en.wikipedia.org/wiki/Advanced_Audio_Coding »

The thing I like about rsnapshot is it's easy to restore: just copy files from your chosen snapshot with a conventional method and you're good. It's also very quick and painless to set up unlike some of the other backup systems I've tried. One thing I do with the remote ssh logins is restrict the key rsnapshot uses to only the relevant rsync command since it usually runs unattended. This saved my bacon when I had a box get compromised last month since the key couldn't be used for anything else. =) »