PwnTunes for iOS 9 is now available. Lets you copy music, photos and video files on iPhone to and from a PC without using iTunes.
Copy Files Or Songs On iPhone, iPad And iPod touch Without Using iTunes With PwnTunes [Jailbreak Tweak]
Apple has done a pretty good job of snuffing out most of the opportunities to share files between iDevices. iTunes is the center of the known universe from the fruit company's point of view, and allowing drag and drop potentially facilitates copyright theft, so no chance of that changing any time soon.