Thanks, Gennady. That works for me*. And I'm just about to go on a walk. Perfect timing! :)
In my browser, if I copied the download URLs you provided and pasted them in a new browser tab, the mp3 file played and I had no option to download it. But if I pasted the URL minus the file name (e.g., http://rationalargumentator.com/austrianrecordings instead of http://rationalargumentator.com/austrianrecordings/Taylor2.mp3), then I was able to view the directory containing all your mp3 files, and I could right-click and download each mp3 file instead of listening to them via the browser.
* The one exception is the first “An Introduction to Austrian Economics” file, whose URL is different than the rest: http://rationalargumentator.com/Taylor1.mp3. Since it doesn't have a subdirectory before the file name, your main website loads instead of a directory listing the mp3 files, and I cannot get to the first Taylor mp3 file. Maybe I'll just listen to that one on the web and the others on my iPod.
Thanks again for all your work!