IPod Access is the solution for backing up songs on iPods on Windows computers.
The software (shareware, $ 14.99), allows you to copy the songs in the player on the reference computer, navigating between them and choosing those that interest you or making a complete copy of the playlist.
The new version, 2.0, has several new features including the ability to copy songs directly to iTunes, clone playlists, a more efficient copy status bar.
iPod Access compatible with Windows XP and Windows 2000, supports AAC and Audible, allows browsing by author and by song title, allows you to edit song titles and different iPods.
Findley Design is available from the developer's website.