Well @Kullenej I've done a fair bit of web scraping with KM in my time, so maybe this will help.
Once you've got the path of the cover image into a variable - your example would be this:
https://rovimusic.rovicorp.com/image.jpg?c=2J_XvcH2by9tIU46jQCxmCpQg_7iAU1wjqLgK_xGXts=&f=4
You need to use the KM Get a URL action and load the image into a clipboard. Here's the example for you:

Notice that I've split the image path into the URL and the Parameter for this KM action. You can try to put the whole path into the URL instead as that might work too and also make it slightly easier to use the KM action. I've also specified the system clipboard - well you can use a named clipboard too.
Let me know how you get on!