inswins on "Custom Post Type"

@bcworkz: Do you mean I have to register my audio genre in normal Wordpress Categories? Based on the code as below:

register_taxonomy( 'audio_genre', array( 'audio' ), array(
				'hierarchical' => true,
				'labels' => $labels, /* NOTICE: Here is where the $labels variable is used */
				'show_ui' => true,
				'query_var' => true,
				'rewrite' => array( 'slug' => 'audio_genre' ),
		));

register_taxonomy is a custom taxonomy right? How can I register to the category taxonomy?