Thanks for the tip, Daffy4u. I knew about MobiPocket.com, because I used to get books there (to read on my PC) before I owned a Kindle. However, I was under the impression that Amazon had a much larger selection -- several of the books I recently bought from the Kindle store don't appear to be in MobiPocket.Com. (Either that, or MobiPocket's search engine isn't as good.)
But I'll maybe try again. It would certainly be easier than the iPod hassle.