XAMPP Mac Permissions Issue with WordPress Site

I’ve just installed XAMPP on Mac OSX and I’m getting the following screen when I’m trying to add plugins or install themes into the WordPress site:

(I’ve set permissions for the entire htdocs directory for everyone to Read & Write, just to try to get it to work and still no go)

So 2 questions:

  1. Where can I find the hostname and username/password?

  2. How can I make it so that me as the admin user does not have to do this at all?