Installing CKfinder locally on MAMP

Hi all.

Surely I am missing something pretty simple here but I can't for the life of me work out why the sample CKfinder gives me the error 'folder not found'. I'm sure it has to do with the baseURL or baseDir being incorrect. I'm using MAMP locally on OSX. Here are my current settings.

$baseUrl = 'http://localhost/mysite/cms/ckeditor/ckfinder/userfiles/';
$baseDir = '/Applications/MAMP/htdocs/mysite/cms/ckeditor/ckfinder/userfiles/';

I would prefer to use resolveUrl so have also tried:

$baseUrl = '/mysite/cms/ckeditor/ckfinder/userfiles/';
$baseDir = resolveUrl($baseUrl);

Any help would be appreciated.

Thanks.