I got a PHP library ([PHP Markdown](http://michelf.ca/projects/php-markdown/)) in my `library` fold in an standard Zend Framework application. What is the best way to load the file and all it's classes to use in my models and controllers.

Structure:

```
library/phpMarkdown/markdown.php

```

Note:
PHP Markdown has a really ugly structure: It's only real "API" is a simple function, not a class. So the elegant was do not work for **this exact case**, but regarding the question the genearl solution the correctly named files/class is also "the right answer.

*Edit*
So much good input here, really not sure which answer I should accept! Thanks to you all!