A recent comment by progmanos on the post of the 184.108.40.206 release reminded that I still have to implement Podcast episode auto-downloading. In the hurry to get 2.0 released I did add the config option, but forgot to add the actual code to make it work.
In Amarok 2 Podcasts are implemented in classes derived from PodcastProvider. There can be mutliple providers, which allows for instance podcast syncing between Amarok and an iPod.
The default provider is SqlPodcastProvider. This is where the auto-download function should get implemented.
This is a nicelly contained and not to steep introduction to Amarok development. So it's an excelent Junior Job.
If progmanos or anyone else would like to have a go at it, contact me on #amarok on irc.freenode.net. My nickname is Stecchino.