In-car arduino BT remote -> Iphone

Hi,

I am considering a project in creating input buttons to send requests to my iPhone so that on Spotify I can change track forward and back, start and stop the track, and hopefully use spotify SDK to display track name on an LCD screen (not essential).

As far as I am aware for this I would need a bluetooth module for Arduino and i already have an LCD screen with combined input buttons (tell me if anything else might be required).

I have tried understanding this article - https://davidfindlay.org/weblog/files/2009_09_07_ipod_remote.php - but a lot of the stuff goes over my head because I am a programming/arduino/electronics simpleton/beginner - does anyone know of some simple ways I might be able to send requests to my Iphone to be interpreted by Spotify? Thanks in advance