Better, simpler, and more energy/CPU efficient version of SAM.
Original SAM runs Applescript thousands of times per hour and can use more
than 100% of your battery in 12 hours if running continuously. This one
watches ~/Library/Application Support/Spotify/Users/*-user/ad-state-storage.bnk
for changes and calls Applescript only then, similar to this.
Cons: designed for my personal use. If you want to configure things you'll need to edit the script yourself.