I found the old project file that my old song, "Omega Droid", was saved to. After looking at it, I realized I had never messed around with the stereo panning of the instruments at the time. I did that, and here is the result. 

There is no drastic difference, but I still think this is the better one out of the two. The "droid voice" is the most noticeable difference, especially with headphones.