Media Library Mime Types to WordPress

This is the type of code that needs to be added to your functions.php file in order to allow you to upload files into your media library.

function custom_myme_types($mime_types){
    //add a new array item to this array to allow uploading of that file type.
    $new_mime_types = array(
            'ogg' => 'audio/ogg',
            'ogv' => 'video/ogg',
            'webm' => 'video/webm',
        );

    //checks to see if there is actually new mime_times to add.
    if ( count($new_mime_types) > 0) {
        foreach ( $new_mime_types as $mime_ext => $new_mime_type ) {
            $mime_types[$mime_ext] = $new_mime_type;
        }
    }

    return $mime_types;
}
add_filter('upload_mimes', 'custom_myme_types', 1, 1);