Podcast Maker may have issues with Mountain Lion - it doesn't seem to have been updated for some time: it's a pity because I used it a few years back and found it very good. You can create podcasts in some website creation programs such as RapidWeaver; WordPress will do it but an awful lot of people have trouble with it and I suspect it's far from easy to use. There are assorted online services including Blogger, SquareSpace, Podbean and Libsyn.
You can view the feed in any RSS reader - I have FireFox nominated as the default RSS reader and it will display the feed as a web page or you can easily examine the actual code.
You can include a PDF as the media file as an episode (though note that you can only have one 'enclosure' in an episode).
Your media files have to be hosted on a website server which handles 'byte-range requests' (the method used by iPhones and mandatory for acceptance in the iTunes Store) - don't use embedded players, download sites or DropBox.
This page offers some basic advice on creating a podcast:
Thanks for the reply,
That's what I thought, too. I prefer real apps to web services but I guess if that is all there is then that is all there is.
We maintain a pretty large history of episodes in our podcast. Is there an online service that works well with a large import of past episodes or am I looking at having to reenter all the information?
With libsyn.com - we can import your current files and XML file - then going forward all you have to do is upload your new files to your libsyn account - add a Title and Description and hit publish.
Libsyn supports Audio, Video and PDF files for episodes.
If you want more info on importing your current Podcast to Libsyn let me know.
rob at libsyn dot com