SuperSync can retrieve music from your iPod even if the iPod is not associated with the computer running SuperSync. This is helpful if you're at work and want to move a file from home to your office and the iPod is associated with the iTunes at home. As one of the terms of using SuperSync, you may only use this feature to access music that you are legally allowed to copy.
For SuperSync to be able to connect to an iPod, the iPod must be plugged in and recognized as a removable disk volume. If it associates with iTunes or you tell it not to associate with iTunes, the volume may be unmounted and become unavailable to SuperSync.
On Windows, the USB drive should show up under "My Computer" along with your other hard drive volumes. On a Mac, the Finder should list your iPod as a device.
Some versions of iTunes lets you specify that you do not want iTunes to associate with any iPod that is plugged in. If available under the iTunes preferences under the iPod tab (not always visible) this setting will allow your iPod to work in "disk mode" which is what SuperSync needs. If iTunes loads and associates with the iPod, it may unmount your the USB drive version of your iPod, making it unavailable from SuperSync.
Ideally, SuperSync will find your iPod and you can click next to go to the finalization page. If it can't find it, click cancel and you may be able to manually find it. Otherwise, follow the directions from your iPod on removing and plugging the iPod back in. Again, you should quit iTunes if it is running or starts when you plug in the iPod.
Once your iPod is found, click the Next button to proceed with importing the music into your remote library. If you get stuck, it may be that Apple is trying to prevent you from accessing your iPod like a disk. If this is the case, you may need to just use SuperSync with iTunes to manage your media files.
Selecting the Import music files from your iPod (read-only) radio button and clicking Next opens another a dialog that will try to find an iPod. If SuperSync is unable to find your iPod, re-read the previous paragraph and try again once you see your iPod on your desktop as a disk volume. If needed, you can manually point SuperSync to the iPod_Control directory, which is where your iPod keeps music.
Note: SuperSync will pause automatic updates to iTunes when your remote library is connected to an iPod. This is because running iTunes can interfere with the iPod. If you copy files from the iPod to your local library, you can run a local rescan to update your iTunes, or after closing your iPod source, updates will resume or you can manually unpause the "Automatic iTunes Updates" from the File menu.