Mingle forum is a wordpress based forum - it has a simple shortcode which is embedded onto the wordpress page that is to be the forum. Since amember is connected to wordpress, and mingle is connected to wordpress, I was hoping the single username would work. This fixes the problems such as mybb forum and others which have their own outside folder, in which case you basically have to try and match the theme so that it looks similar. Meanwhile, mingle forum is easy because it just embeds within your page.
Since Mingle Forum is a WordPress plugin, there should be no problem in using it with a WordPress/aMember integration.