This script setup is an original design by me. It shows track information about what's playing as well as album art from the current track AND the previous artists album art.
You will need to modify the SpotifyMaster.scpt file and change the following line:
set artpath to "Macintosh HD:Users:zachappel:Documents:Geeklets:Spotify:SpotifyPlay.txt"
Set it to wherever you place the SpotifyPlay.txt. It will save the artwork under your mac's TMP folder, so don't mess with that.