Responsive section has the wrong font

http://mixtapenation-dev.co.uk.gridhosted.co.uk/

So I had this problem ages ago, and got stuck and left it but really need to get it fixed.

If you look at the test version of the site, you can see that where I have mailing list, gigs and tweets I have 2 versions.

The first version has the correct fonts to match the site but is not responsive and just squashes together when the screen shrinks.

The second is responsive and stacks as the screen shrinks, however the font is not right, and I am pulling my hair out trying to fix with my limited knowledge of what I am doing.

Any help gratefully received.

Tom