iTunes can sync data from iTunes library to your iPod, However, it doesn't allow you to Sync data between iPods, Here is an extra solution to helpyou Sync video/audio/photos etc between iPods.
iPod 2 iPod is a program that allows you to transfer your music and video between them. Until now this hasn't been possible without losing all your existing songs. iPod 2 iPod gives you the power to take control of your music collection.
iPod 2 iPod Guide:
Minimum installation
Ensure your computer meets the minimum installation requirements.
iTunes
Although iPod 2 iPod will detect and automatically close iTunes...
We do not recommend attempting to run iPod 2 iPod while iTunes is running.

Start iPod 2 iPod
When iPod 2 iPod first starts it appears as follows:

Connect your first iPod device via either USB/Firewire connectors.
It will take iPod 2 iPod approximately 15 seconds to auto detect then display the music from your first iPod.
Your first iPod is identified as a 'tab' on both the left and right sides of the screen.
Using iPod 2 iPod
iPod 2 iPod is a simple application to use. All functionality is driven via the ‘Graphical icons’ on the main menu bar or from the ‘Right Click’ menus initiated within the song list.
Graphical icons
| As the default iPod 2 iPod displays all songs on your iPod. | |
| Use "Playlists" to manage the playlists on your iPod. | |
| While iPod 2 iPod automatically creates a "Backup" of each iPod when it is first connected. You may use this function to make subsequent backups. |
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| "Restore" allows you to easily restore from a previous backup. Simply click the "Restore" icon and iPod 2 iPod will automatically restore your iPod to the same state as your last backup. | |
| The "Advanced Filter" is particularly useful for the viewing and management of large music collections. | |
| The "Eject" button will detach the currently selected iPod. It is important that you only disconnect using the eject buttons; simply disconnecting at either end of your cables could cause damage to your system and/or iPods. |
The Right Click Menu
Use the "Right Click" menu to carry out a range of actions on the individual song tracks.
To initiate this menu place the cursor over the music list and click on your right mouse button.
| Play | Enables you to listen to the currently selected track. |
| Show All | Shows all music on your iPod. Useful when viewing songs within playlists. |
| Select All Songs | Selects all music within the song list. |
| Select Similar Songs | Selects all songs matching the text in the first column. |
| Find Duplicate Songs | Finds duplicate music on your iPod. You will be given the option to clean-up any songs found, freeing up space! |
| Find Unlinked Songs | An annoying issue in iTunes, the "Unlinked Songs" function helps discover music titles which are no longer associated with the actual music file |
| Find Unique Songs | Compares the iPods in the left and right panels, and displays the songs which are on one iPod, but not the other! |
| Delete Selection | Removes music no longer required. |
Transferring music
Select the songs you wish to transfer and either drag them to the destination panel, or click on the "arrows" to transfer music from one iPod to another.
