Best Option to Monetize this site

I have a website that is getting an average of 700 p/v a day. The URL is http://sierrafm.net.
What would be my best option to monetize the website. I was thinking about using Google Adsense than I remembered there might be a problem since it carries quite a few images and while in public domain Google might think that they are copyright.
So what is my best option to go? Thanks.

See original post by worldman