I don’t know how it got past me for so long, but the images on the site have been fixed thanks to a lovely little plugin called “Velvet Blues Update URLs.”
In case any other WordPress users have the problem of images keeping the old URL after you have moved a WordPress blog from another directory or web site, look up that plug in and use it. It works exactly as you think it should.
Also, here’s some stat updates for anyone who cares:
An average of about 4,200 hits a month for the past 6 months.