Greetings from Sydney, Australia. Well I showed the AVI to my 3 1/2 year old and now all I hear "when can we play that mermaid game and ride the seahorse"? Both of us are really looking forward to purchasing and playing Aquaria. As a full-time software engineer I know the last 10% is *always* the hardest, but keep up the good work and you'll get there.
Oh, and as others have suggested, a soundtrack post-release gets my vote too.