Anyhow, I thought everyone would like to know that while I haven't found a way to fix the problem completely; I have found a way around the problem.
To add files and hopefully stop the window from constantly refreshing, you have to select the files you want to burn from its original file location (NOT using Power2Go). Then simply copy, select Power2Go, and then paste using keyboard hot keys (ctrl+V). Not only did this stick the files I wanted into the "Disc Compilation" section, but it also stopped the constant refreshing. After copying and pasting the first file, I was then able to use the program normally.
Hope this helps =)