On a Mac it is in the iTunes folder in the Music folder. On a Windows PC it is in the Music folder (or My Music inside My Documents on Windows 7).
once you have connected your ipod to itunes drag the music folder from your itunes and drop it to the ipod folder on the left side of itunes. this can only be done if u have installed itunes in your laptop.
Itunes
You must connect it to an itunes library on a laptop or desktop computer.
i'm assuming you want to transfer music from your iPod to your laptop. plug in your iPod and open iTunes and go to File>Transfer Purchases
Answer:If you have "manage music manually" set you can copy the music folder directly across a cat 5 wire (over network) and play them on the laptop. If you have some DRM'd music (bought at iTunes) you will need to be sure the account listed on the laptop in iTunes is the same as on your desktop and you put the password in when it asks for it.
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Depending whether you're on a mac or on a PC, all you have to do is copy the contents of : C:\Documents and Settings\Administrator\My documents\My music\iTunes (Windows) Home\Music\iTunes\iTunes Music\ (Mac Os) on your hard disk.
PS3 has a Harddrive which you can change with a standard laptop harddrive
This laptop comes with a 320GB Serial ATA Hard Drive.
I would recommend buying a USB hard drive enclosure that will fit your harddrive.
if you have downloaded the itunes back. you have convert the itunes to the format ipod nano supported.
If you do not have a copy of iTunes software installed install a copy of Itunes software. Assuming the music on the laptop is in mp3 format drag the music files in to the iTunes music library. You can also add tracks from CDs you may own and iTunes can convert them to the mp3 format. Connect the iPod to the laptop's USB socket and iTunes will recognise it. You can then manage the music you want added to your iPod - iTunes can pick a random selection for you or you can set up your own playlist of tracks you particularly want to hear.