Step 1:Download Aniosoft iBackup
Step 2,Install and run Aniosoft iBackup and plug your iPod from which you want to transfer music to the computer in which has been installed an iTunes..
Step 3,Transfer the iPod’s music to iTunes with Aniosoft iBackup and also a music backup can be made in any storage device at the same time.
Step 4,Unplug the iPod and plug another iPod to which you want to get transferred music to the computer and sync it to the iTunes. Then another iPod has gotten the same content as the former iPod.