Here we would like to tell you how to add files to iPhone, backup files to local, and add to iTunes library with iPhone Transfer.
Firstly, download, install and run this software, interface will come out soon. Connect your iPhone to computer via USB cable. After done, the iPhone icon and its library and playlists will appear in the Device list.
Add files to iPhone:
Open the library or playlist you want to add files into. Click "add file" button, choose the "add files to the list" option and add the former files to these playlists.
Tip: If you want to add a folder containing all files you want, please click the "Add files" drop-down button, and choose the "Add Folder to List" option, and then locate the folder to your iPhone.
Backup files to local:
Open the playlist you want to export files and make sure of the files. Then click "back to local" button, iPhone Photo Transfer will automatically start transfer instantaneously.
Tip: When the software is started, it will modify the automatic synchronization between iPhone and iTunes.
Add to iTunes library:
Open the library/playlist that you want to export files, and then check the file(s) you want to export in the file list. Click the "Add to iTunes" button to start transferring files. Make sure iTune is closed before starting this software.
Tip: When iPhone Photo Transfer is transferring, it will modify the automatic synchronization between iPhone and iTunes.
Key features:
1. Install the software into iPhone to manage your iPhone files on any computer, and make music and videos sharing pretty simple and handy.
2. Manage iPhone as portable hard disk.
3. Create, rename or delete a playlist to manage your iPhone music and video files conveniently.
4. Find what you want quickly by filter and quick search tools.
5. The information about your iPhone including type, capacity, version number, serial number and format are listed on the main interface for you to manage your iPod files easier.
6. Friendly interface to make all your viewing, searching, transferring tasks simple and quick.
7. For your convenience, the iPhone videos and music can be played with system default player from right-click menu in interface of the iPhone transfer software.
8. High speed to transfer files. This iPhone transfer software takes as little time as possible to transfer videos and music between iPhone and PC.
As all-in-one iPhone transfer, iPhone Photo Transfer is a powerful, easy-to-use transfer, can transfer photo from iPhone to computer, transfer iPhone photo to mac, transfer iPhone photo to itunes, transfer photo from pc to iPhone. If you own more than one devices, iPhone Photo Transfer can manage all the interfaces and by drag-and-drop, you may transfer files among these iPhones.
free trial version 
Price: $24.95 
