Get the RSS links for iTunes U courses directly from the course pages, allowing you to subscribe with any podcast client.
On iTunes U course web "preview" pages, an orange RSS feed icon will appear in the Chrome omnibox. Click on the icon to open a popup, then click on the link in the popup to view the course's RSS feed.
You can then subscribe to the course's RSS feed with any podcast client or RSS reader.
The extension will not appear on non-iTunes-U web pages.
Source code is available on Github: