We Recommend you use OverCast as your Podcast player, but you can use any podcast player that supports Premium password protected content.
In overcast you can paste the above URL (RSS Feed) into the option to load a Podcast via URL and enter YOUR Username and Password for TheHappyManagers.com to access the podcast.
NOTE: Overcast, or most other podcast software, do not support episode ordering other than release date and because of this you may find that podcasts are sometimes out of order for courses. You can get around this by creating a PlayList and ordering the podcasts within in that PlayList in the correct order.