how do i move music from an old ipod to my new computer
From your OLD computer...
Copy your ENTIRE iTunes FOLDER to an External Drive... and then from the External Drive to your New Computer..
Full Details Here > http://support.apple.com/kb/HT1751
how do i move music from an old ipod..
If you do not have access to the iTunes Library on your Old computer... or its Backup... See
Recovering your iTunes library from your iPod or iOS device