Meta box to display content on front page

Hi!

I’m making a video site which feautures videoes and also a live broadcast. The broadcast will not be available at all times so I am trying to add a text on the front page when the broadcast is available by using a checkbox. This is the code i have so far:

function true_add_a_metabox() {
    add_meta_box(
        'live_metabox', // metabox ID, it also will be it id HTML attribute
        'Livesending', // title
        'true_display_metabox', // this is a callback functions, which will be print HTML of our metabox
        'post', // post type
        'normal', // position of the screen where metabox shoul be displayed (normal, side, advanced)
        'default' // priority over another metaboxes on this page (default, low, high, core)
    );
}

add_action( 'admin_menu', 'true_add_a_metabox' );

function true_display_metabox($post) {
    /*
     * needs for security checks
     */
    wp_nonce_field( basename( __FILE__ ), 'true_metabox_nonce' );
    /*
     * lets add a simple textarea field
     */
    /*
     * add a checkbox
     */
    $html .= '<p><label><input type="checkbox" name="live"';
    $html .= ' /> Trykk her dersom dette er en livesending</label></p>';
    /*
     * print all of this
     */
    echo $html;
}

function true_save_post_meta( $post_id, $post ) {
    /*
     * Security checks
     */
    if ( !isset( $_POST['live_metabox_nonce'] ) || !wp_verify_nonce( $_POST['live_metabox_nonce'], basename( __FILE__ ) ) )
        return $post_id;
    /*
     * Check current user permissions
     */
    $post_type = get_post_type_object( $post->post_type );
    if ( !current_user_can( $post_type->cap->edit_post, $post_id ) )
        return $post_id;
    /*
     * Check if the autosave
     */
    if ( defined('DOING_AUTOSAVE') && DOING_AUTOSAVE )
        return $post_id;

    }
    return $post_id;
}

Does anyone have any tips or tricks to get this to work. My meta box displays fine when writing a post, but I am not able to display any content on the front page, and the checkbox does not save correctly aswell. Thank you for your time and any help will be appreciated.