I am on a 10 day trial with EZDrummer 2, predominantly to use with my Roland kit, and I am thoroughly enjoying the sounds EZD 2 creates for my kit. What I also need to do is to be able to play my music backing tracks with EZD2 running on my laptop. How do I set this up if possible please. As the EZD 2 software suppresses other sounds like Spotify on my laptop???