why is the code below being added to my source when going to a page using a view? It looks like it is referring to an album and artist when I don't even have these as custom post types?
Hello. Thank you for contacting the Toolset support.
Well - I was checking about the script and the script belongs to WordPress function: wp_underscore_playlist_templates() - that generates the script you shared.
Can you disable the Toolset plugins and check, it the script is still there that means it belongs to WordPress.