Here we would like to tell you how to bakup checked files to local, add checked files to iTunes library and transfer files from ipod to ipod with Mac iPod to iPod/Computer/iTunes Transfer.
First, free download, install and run the software. Once connect iPod to Mac with Apple USB cable, and all information about your iPod, such as type, capacity, version, serial number, and format, will be shown on the main interface. If you wanna this iPod music to iTunes Transfer and get the full version.
Tip: All functions for iPod are applicable to iPhone, iPhone 3G, iPhone 3GS, iPhone 4 as well except for the photo management.

Transfer files to Mac local
1). Click "music" or other icon to open iPod library folder, you can see all files are displayed in the interface. Locate and check the files you wanna transfer to Mac, and press "export checked files to local" button or choose "export checked files to local" in the top "Export" menu.

2). Select a local folder to store your music on the left panel and click the "Save" button to export the files from your iPod to local folder.

3). When finished, the following information dialogbox will be poped-up as belows:

Transfer files to iTunes
1) Open the library/playlist that you want to export.
2) Check the file you want to export in the file list.
3) Click the "iPod to iTunes" button to start exporting files.

4). When finished, the following information dialogbox will be poped-up as belows:

Transfer files from iPod to iPod
1). Run the software, and connect your iPods (but only one iPhone) to your computer. Then open a library/playlist from one of the devices.
2). Find the songs/videos you want to transfer in the library/playlist and drag them to the target iPod/iPhone.