Acoustic doors?

Thank you all for your helpful respsonses and references. One of the aspects I love about this hobby (or profession for some) is the chance to apply science and test theories in solving problems. I now have some more food for thought, and for a temporary fix for my leaky door I will try hanging my 30 year old Coleman sleeping bag over the door. This will ad some mass and create a 5" air gap. I will post the effectiveness shortly.
For a more permanent fix, I'm thinking a heavy exterior door with good seals would be the most economical solution. Can anyone recommend some good manufacturers of such doors?

For a cost effective and functional solution to your problem, consider this: . . . . headphones. You'll get to hear some really good tunes, and your wife will be able to sleep.

I have headphones and use them when I can. However, there are a lot times when headphones are not an option.
In any case, I was able to tighten up the door tolerances and temporarily hang two cotton and one wool blanket over the door. I have achieved a considerable improvement in sound attenuation and the Mrs. is surprisingly impressed my blankey solution. It's kind of like entering the yurt when you squeeze through the blankets
I see installing a solid core 1 3/4 exterior door with the best weight to price ratio and imploying a good gasket along with stiff framing and hinges as the best solution so far. Then I can see where the next weakest link is. I can't wait.

Hals_den

For a more permanent fix, I'm thinking a heavy exterior door with good seals would be the most economical solution. Can anyone recommend some good manufacturers of such doors?

I don't know where you live, but if there's a Home Depot or Lowes nearby they sell several quality levels of solid core doors. I opted for plain (no panel) paint grade since the other interior doors are this style. You can go solid for as cheap as $75.00 or $80.00 (I just checked via internet).

Alternately, if you have a builder supply in your area, they stock door and window in an amazing array of styles and finishes, hopefully to suit your home and your wife :^).

Often a local handyman will have a wholesale account at one of these places, you can go shop with him and pay him a markup on the door and his labor and everyone comes out great. I did that with my three solid core doors (two different contractors) and got great results both times.

Albertporter,
Thanks for the advice. I have a contractor that I have been working with and I will talk to him about purchasing and installing the door. It will pobably be few months before the job will be started.
Hopefully I'll remember to post the results.