mrmister,to save yourself a lot of effort, I suggest you go to DeviantArt and download a foobar2000 with ready-made skin by tedgo or Br3tt.You will see the ELPlaylist in these skins fully configured as you want. All you need to do is play with the skin for a while until you feel comfortable,then you dive under the hood and grasp how it was done, then you emulate it in your own foobar2000.
Friend just click on the version link provided with date under ELplaylist section, further there is a doc. inside it in english. (In my case my browser is giving me an option to convert the page language )
@mrmisteryou could try this keeping your standard installation as it is and installing another copy as a portable installation. Keep practicing and tweaking on the portable one while your standard one is totally safe.hope this helps