How to Transfer iPhone to iTunes for Free on Mac (iPhone 4S)
You may have got a lot of songs that are not bought from iTunes Store on iPhone (including iPhone 4S) and want to copy them to iTunes on Mac OS X so that you can share sync them with your iPod or to enjoy them on the Mac. But normally, you can not to do that because iTunes doesn’t allow you to copy those which are not purchased from iTunes Store.
Generally, if your iPhone music are purchased from other resources, then you need some third-party software to export music and movies from iPhone to iTunes on Mac.
Here we recommend you a free iPhone to iTunes Transfer for Mac for you to transfer music from iPhone to iTune (iPhone 4S to iTunes) for free. It well supports all versions of iPhone, iPod and iPad. Free download it and follow the step by step guide to backup iPhone music to iTunes on Mac.
Download Mac Free iPhone to iTunes Transfer
How to transfer iPhone music to iTunes on Mac for free
After downloading the program, install and launch it. Connect your iPhone with your Mac., iPhone, iPhone 3G, iPhone 3GS, iPhone 4 and iPhone 4S are supported. The you will see the main interface as below showing that your device has been connected.

Note: If you want to transfer and backup music of more than one iPhone, connect them to your Mac at one time, then you can switch between the different iPhones to conduct your transferring.
Then all music/videos will be displayed on the left of the interface and sorted clearly in different catalogs.

Now you can start transferring music & videos. Just drag the songs or videos from the left to the right of the main interface, and you can successfully transfer them to your iTunes (iTunes 9 and iTunes 10).
Note: If you want to transfer videos, photos, DVDs, etc. from iPhone to iTunes on Mac, you can turn to iPhone 4S/iPhone Transfer for Mac. It allows you to backup music, movies, photos, TV shows, ebooks, podcasts, playlists, etc. from you iPod/iPhone/iPad to your Mac. At the same time, it can convert DVD movies and videos like AVI, FLV, MPG, MP3, etc. which are not supported by iPhone to iPhone and iTune.
