I emailed the developers regarding the problem I was having with Pocket Casts podcatcher. Basically it doesn't play any of the podcasts, whether downloaded or streamed. The audio player just doesn't work. I have CM7.02, and tried again with CM7.1RC1. Neither worked.
The developer says wait for next version, 2.8. So apparently they are aware of the problems some users are having.
Stay tuned. Interface is nice and clean. If it plays, I'll be much more impressed.