Still new to HA and working on a media player for which @DezeStijn provided the scripts. Looks promising.
I need to edit the scripts. In the scripts.yaml file I only see this. You will laugh, but where is the editable yaml file?
Could you provide some more details?
Like a link to the community page of the scripts you are working with?
Hate to burst our bubble, but this is an editable script file 
What makes you think it isn’t? There are two empty scripts in your script file. If you’re looking for a better editor (though this isn’t actually bad, it contains things like autocomplete) then try the Studio Code add-on. That is a full blown IDE.
Edit: If you think the two squares represent binary data: they aren’t - they are square braces, representing an empty list. The [ and ] are so close together they look like a square.