I need to move my iTunes library to an external hard drive.

Can anyone give me some pointers for a Mac?

Cheers

go to music > itunes > itunes music and drag that last folder to your external hard drive.

open itunes, go to itunes in menu bar and select preferences, then advanced, and change itunes music folder location to where you put it in your external hard drive.

Thanks. You have answered a question that I wanted to ask also

What do you mean by the 'last folder'?

the folder "itunes music".

Thanks I'll give it a go!

This method will work but it is not the best way to do it. Itunes can do this for you and at the same time update the links in your library so they point to the new drive.

First of all Go to Itunes>Preferences>Advanced
Make sure 'Keep iTunes Music Folder Organized' is checked.

Then it's simple... This from apple support. Apple support at apple.com is always the best place to go for advice.........

"Once you've done that, follow the next set of steps to change your iTunes Music library location to the new drive and then consolidate your library to the new location. This not only copies your audio files over, it also retains your ratings and playlists. Note: If you move your music library to an external hard drive, you will need to have that drive connected to access your files. No matter what, it's always a good idea to have a backup of the media you have in iTunes.

Open iTunes.
From the iTunes menu, choose Preferences.
Click the Advanced button in the Preferences window.
Click the Change button in the iTunes Music folder location pane.
In the Change Music Folder Location window that appears, navigate to the location where you would like your new Music folder to be created. Note: By default, your iTunes Music folder is a folder named "iTunes Music" in ~/Music/iTunes/ where the tilde "~" represents your home directory.
Click the New Folder button in the Change Music Folder Location window.
In the New Folder window that appears, enter the name of the new iTunes Music folder.
Click Create.
Click Open in the Change Music Folder Location window.
Click OK in the Advanced window.
From the File menu, choose Library and then Consolidate Library... A message appears that says: "Consolidating your library will copy all of your music into the iTunes Music folder. This cannot be undone."
Click Consolidate. Important: This action copies all of your music files to the new location. There must be enough hard disk space available to copy all of your music files.
After the folder has been copied, locate your original iTunes Music folder, and drag it to the Trash or Recycle Bin. Note: Don't remove the iTunes library files that may be in the same location as the iTunes Music folder. For more information about the iTunes library files, see this article.
Empty the Trash."