If you want to free your iPod from iTunes and be able to transfer, remove, backup and organize music, videos and playlists without the fear of get the iPod erased if you connect it to another computer, you can use Sharepod a free a program that does all this and more and its portable and you can even add and/or edit your tracks artwork and its built in media player!!
Version 3.8.7 get it here
more info at here
The iPod need to be connect to use the program.
Its iPhone and iTouch compatible.