Lost all the music because of a system reinstall, computer repair, iTunes crash, or unknown reasons?
Want to move your playlists to a new computer?

Not a problem anymore. MobileGo for iOS lets you easily transfer music, video, playlists, Podcast, iTunes U from your iPod, iPhone and iPad back to iTunes,
and transfer more data, like photos, contacts and SMS, to your computer.
And it does even more:
Not just copy files to iTunes & PC: Also transfer files from PC & iTunes to your iPhone, iPod, iPad .
Convert music & video: Automatically convert to iDevice-compatible formats during transfer.
Copy photos between Apple devices and PC: Drag photos to your iDevice or save to your PC to print & share.
Fully manage your iPhone contacts: Manage contacts: Edit, import, remove duplicates & more.
Directly transfer between Apple devices: Transfer music, photos, contacts and more from one Apple device to another.

Download from here:

Click here for Windows : iPhone Data Transfer on Windows
Click here for Mac : iPhone Data Transfer on Mac

export media to itunes

export media

transfer music from iPhone/iPod touch/iPad to Mac

transfer photo from iPhone/iPod touch/iPad to Mac

See user guid on

for windows : how-to-use-mobilego-for-ios-to-transfer-anything-on-iphone-to-your-windows

for mac : how-to-use-mobilego-for-ios-to-transfer-anything-on-iphone-to-your-mac

See more softs : iPhone iPad software free download

Yes, they do. They offer the iPhone 4 and iPhone 4S on their current phone list.