Important Update - 12 Jan 2017

Spotify released an update today - Spotify v1.0.47.11 - and an update is required to make sure Equalify Pro will work as it should. More info available here
Please download the latest version of Equalify Pro - After installing the EQ will show up once you play a song in spotify. (you will need a valid license to use Equalify pro):

Download Equalify Pro 1.1.7