to edit https://script.google.com/home/my click spreadsheet https://docs.google.com/a/mymusictaste.com/spreadsheets/d/1-3PjPHQalYPTpEDNTQawCUwL26P20YHKBE07pACt3Hw/edit?usp=drive_web then tools -> script editor
once tested file-> manage new version -> publish publish -> web addon -> chrome app page-> publish wait for app to publish then clear cache