Résultat d'une recherche rapide pour mon collègue Wolfgang qui a hérité d'un iPod shuffle récemment et passé tout son week-end à ripper ses CDs pour en faire un best-of. C'est vrai quoi, il a pas envie de refaire le boulot :-)

Je cite http://www.uneasysilence.com/how-to-backup-your-windows-itunes/ :

[This tutorial] was written under the assumption that your iTunes preferences “Keep iTunes Music folder organized” & “Copy files to iTunes Music folder when adding to library” are checked under the Edit > Preferences > Advanced tab.

Create a new folder on your external HD or in the Shared folder on your second computer. Name it something like ‘iTunes Backup’. Next, go into ‘My Documents’ > ‘My Music’. Inside the ‘My Music’ folder you’ll find the iTunes folder. All you have to do is copy that whole iTunes folder to your external HD or Shared folder. The iTunes folder contains your complete music library as well as two important files: iTunes Library.itl and iTunes Music Library.xml

Right-click on the Start button and select ‘Explore’. In the ‘Tools’ menu, select ‘Folder Options’. Select the ‘View’ tab. Under the ‘Advanced Settings:’ tick ‘Show hidden files and folders’. Click ‘Apply’ and ‘OK’ at the bottom of the window.

Use the left column to navigate to Documents and Settings > Your Username > Application Data > Apple Computer > iTunes. In the iTunes folder you should see a ‘iTunes Plug-in’ folder and a ‘iTunes.pref’ file. This .pref file contains all your preference settings for iTunes which is what you want to copy.

That’s all there is to it. The only thing left to do is to install a fresh copy of iTunes. Download your copy from here and run the installer. At the end of the installation run iTunes once ignoring the import wizard and close it. Then drop the iTunes folder and files exactly where you initially found them. When you fire up iTunes the second time your playlists, smart playlists, ratings, play counts, and last played dates will be right where they’re supposed to be.