Using K2 component. Did not like default look of files listed under categories (http://www.wilddusk.com/wild-india) with images of directories. How one can explore other visually-appealing way?
It is quite simple, actually.
Find a beautiful template on the web, then upload it to your site, then modify the category, or categories, that you're listing, to use that template in the backend:
Administrator Menu: "K2" -> "Categories" -> "Edit Category" -> "Category Item Layout" (Tab on the right) -> "Select a template"
Or you can create your own template, and there is a resource to help you with that: http://y-designs.com/ja/blog-ja/k2-templating-from-0-to-100mph-in/