Wordpress - 添加外部链接以发布缩略图

I'm not sure if my title describes what I'm looking for accurately enough. Basically, I'm trying to replicate what has been done on this page, underneath each release: http://www.deadmau5.com/releases/

Now, I know I could just do it all manually every time a new release is added, but I want to make it as easy for the client to update as possible. Ideally, I want them to create a new page/post for their release, with custom fields for an Amazon and iTunes link. I'd want the featured image to appear on the parent page, with the Amazon & iTunes links underneath.

I've looked into the Advanced Custom Fields plugin (http://wordpress.org/extend/plugins/advanced-custom-fields/) for WP and it seemed to offer part of a solution, but not exactly fulfilling what I need it to do.

Can anyone suggest any plugins (or a combination of plugins) I could use? Or even any other way of doing this, which is going to make the process as easy as possible for my client to update?

Thanks.

You are correct with custom fields.

Create a custom field that contains the link of where you want it to go. Then make the image a link with the href = to the custom field. Like so.

$link = get_post_meta($post->ID, 'custom_link', true);

echo '<a href="' . $link . '"> ' . the_post_thumbnail() . ' </a>';

Be sure to call your custom field custom_link.