I would like to put my whole CD collection on my new Classic iPod (160GB). I've never owned an iPod before so I'm relying on the expertise of you iPod owners out there. My question is this.....After I rip my CDs into iTunes and sync them onto my iPod, do I have to leave those previously ripped CDs in my iTunes library when I sync new music, or can I delete those CDs and add others ? I know with my iPhone, if I sync music to it and then delete them, the next time I sync new music to it, it deletes the music I've deleted for iTunes. Please help. Thanks in advance.