What's the best language to create a user editable page with admin area, like a web radio page?

Question

I was looking to develop a web radio page for a friend of mine.
The page should be completely editable through a login area because he knows nothing about programming and his page is always updating.
all fields on the page should be editable ... title, add photos to the mural, music, videos ... everything is editable so that it just writes in the corresponding text box, save it and it changes directly on your site.
What would be the best language to create something like this?