How to sync music to LG G2 with a Mac?

I had a iphone upgraded to a lg g2. I have a macbook pro with all my musin in itunes. There all in mp3 format. How do I add music to my lg g2. One thing i loved about iphone i didn't have any trouble to sync my playlist to it. I've tried doubletwist, it wasn't adding playlist. All i need is to sync my playlist not all my music in my itunes library.

I use the app isyncr.(paid version) this allows you to take anything you have on itunes and download it to an android based phone just by plugging it in to your laptop with a usb cord. When you download the isyncr app on your phone it will have you download a program on your laptop. After doing that when you plug your phone into the laptop it will register the isyncr app (when you have it open on the plugged in phone to laptop) and allow you to chose if you wish to download a selected playlist or all of the music. Hope it helps