The different options you see for subscribing to WindowtotheMagic (Audio+Video, etc) are what are
called "feeds". Each feed is what tells your aggregator software when a new show is available for
download. To use one of the feeds, right click on the feed of your choice (depending on what
content you want to automatically receive), copy it, and paste it into your aggregator software.
If you are using iTunes, you may use the button to jump straight to the main WindowtotheMagic feed (Audio+Video) and subscribe from there.
For general help on podcasts, click here.