Works perfectly, thank you!
Thanks for pointing me in the right directon. I wanted the font only bold when viewing a single post, not when displaying several posts on my front page. I solved this by manually setting the text to bold i WP Text Editor and adding this to my front page to make it slim again:
.entry-content p strong { font-weight: normal !important; }
Probably a little dirty, but works…. 🙂
This post explains how to resolve my question using a small self-created plugin:
http://kellenmace.com/remove-custom-post-type-slug-from-permalinks/