Adding music to iPhone 4s

Solution 1:

i think you can mount your device via usb and then just enable usb debugging in your device and then you can surely enjoy it.

once you have enabled usb debugging you can play them via rhythmbox music player

Solution 2:

There is currently no way to add music to the default music player on an iphone running iOS 7 due to compatibility problems. An alternative solution is to install a alternative iphone media player, I use Oplayer lite which allows you to add music and play music uploaded from my pc to my iphone via browser and wifi. For further details on iphone functionality have a look at the following website.

http://www.libimobiledevice.org