So it looks like I can record my voice, add a snazzy canned track, and I think (hope) upload it to my blog. I declare victory for the evening.
Update: Fail. The podcast appears in my MacJournal window, but not on blogspot. (will have to work on this more tomorrow... or host it somewhere else on line?)
Second Update: I can manually insert the m4a file as a video, but would still love to be able to do it from MacJournal... will have to investigate further tomorrow.