How can I copy songs from an iPod to a Mac without using iTunes?
Senuti is the tool of choice in these situations:

Need to recover music, playlists, or videos from your iPod or iPhone? Look no further! With Senuti, you can recreate your iTunes music library in just one click.
Want to be more specific? Preview and select only the songs and playlists you want to transfer. Senuti has helped millions around the world recover their music, videos, and playlists since 2004.