I just followed this example, and this is my code:
RewriteEngine On
RewriteBase /
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^(.*)$ $1.php [L,QSA]
However, http://www.indieFunction.com/radio/ returns a 500 Internal Server error... does anyone...