I've been an Amazon user for almost 14 years now, starting with books and moving on to just about everything else they sell. For the last couple of years I've downloaded MP3s (initially just to avoid Apple's DRM, but now because I can find music much more easily). Every time, though I have had to download and install a new copy of their MP3 downloader (nicely done for what it does, by the way).
The number of times I've bailed on downloading music is much higher than the number of copies of this that are in my Downloads folder (and I've deleted a few copies over time as well).
Today, though, Amazon did something new, which they always do in their subtle, tweakish way. Just below the confirmation message, they offered several answers to what they must know to be common problems. One of them, it immediately occurred to me, was mine.
Even though I'm pretty good with computers and such, for some reason I had never thought to associate the Amazon file type with the appropriate application in my browser. It's something I've done in the past, but not in this case. Anyway, a couple of clicks later, I think I've solved my problem.
The reminder for me is to keep on iterating on everything I put out there. Small adjustments can make a massive change, while massive changes may just introduce more inadequacies to be cleaned up later.