The production sound isn't too bad (I've heard MUCH worse), the little I heard of it, although I didn't listen on my "good" speakers. The issue we (Sky and I) are discussing is the overall balance between dialog, Foley, sound effects and music- the audio mix. I shouldn't have to keep adjusting the volume to turn down music or turn up dialog.
You also need to work on your sound editing. There are loud cheeps and chirps while the dialog is happening, and it doesn't sound like it's part of the dialog track; it sounds like you used a generic bird background sound effect without editing it so the bird chirps appear between the lines of dialog.
Audio post is as complex an art-form as composing & lighting a shot or doing seamless CGI effects. It is composed of many, many carefully selected, edited and processed layers of sound (Hollywood films can have over 1,000). There are no simple solutions. As APE and I have discussed along with the other audio pros here on IndieTalk the first thing you need to do is to learn how to listen. Most indie filmmakers hear their sound as they want to to be, not as it actually is. We all listen so automatically that we are never aware of it. In fact our sense of hearing is the ONLY sense that we cannot turn off. It's not as easy as you think. It's the only sense that is 100% active when we sleep, and, in fact, is the only sense that can have a major influence on unborn babies. So, you need to learn how to listen. Next, you need to learn the technical language of audio - tracks, channels, inserts/plug-ins, Audio Suite, various type of processing... the list goes on and on. And then you need to learn the artistic language of film sound. Certain conventions/clichés are expected, you almost always must use them.
There are number of books that, for me at least, are basic.
Dialog Editing - John Purcell
The Foley Grail - Vanessa Ament
The Sound Effects Bible - Ric Viers (also get his Location Sound Bible)
Practical Art of Motion Picture Sound - David Yewdall (technical/practical)
Sound Design - David Sonnenschein (artistic/philosophical)
Audio-Vision - Michel Chion (it's just good)
You should also deeply delve into FilmSound.Org, especially the Randy Thom and Walter Murch articles. The historical articles will also give you some much needed perspective. There are also quite a few good vids on YouTube.
http://www.youtube.com/watch?v=OexxFXUvit8&list=PLRQfdeu9nXWKU6oKGPd_LnUSRE_ppWTuW (not that instructive, but a nice introduction and entertaining)
http://www.youtube.com/watch?v=OONaPcZ4EAs (not realistic, but gives you an idea of what Foley is all about)
http://www.youtube.com/watch?v=AwBxNj_0B_Y&list=PL2A6TzvtLmBO9NXD1qoawDDsqZ-BtEcND (playlist of over 30 videos on sound-for-picture; some excellent, some good, some fair)
You can also check out posts by myself and APE (Audio PostExpert) right here on IndieTalk.
There's not much on mixing/rerecording, but, even with all of the standard processes and conventions, is probably the most esoteric and subjective audio art of all.
Another aspect that always seems to irritate many indie types is when we audio types tell you that you need GOOD speakers in a CONTROLLED audio monitoring environment, but we'll dive into that at another time.