This looks great. I actually wood prefer a third party app though because using the stock apps means that audio auto plays when connecting to some Bluetooth devices. It drives me insane that every time I get in my car some audiobook I was listening to starts auto playing.
Actually, that's why I bought an Android device. I got enough of this iTunes bs and searching for 3rd party apps to do something as simple as copying an MP3 file or e-book from my computer. And still, I have to buy and install some software as Apple want to make it as difficult as possible not to have them as the intermediary.
So now I carry two: iPhone for general use and Android for listening to music, reading e-books and many other things.
