Comment 4 for bug 978825

I just upgraded to Ubuntu 14.04 and tested podcast downloads with Rhythmbox.

The bug does affect me too, though I would make some changes to the steps to reproduce:

1. Subscribe to a podcast

2. Doubleclick on an old episode to download it

3. Start playing it while it is still being downloaded

4. Try seeking a position by clicking on the seek bar. It doesn't work. (The seek bar is disabled.) Even after the download is completed, the seek bar still doesn't work. You have to start another (already downloaded) podcast and then start the one you really want to listen to again to get it to reappear

As unlikely as it may seem, the specific podcast seems to matter. The bug happened for the exact same feed as the OP's, but not for two others that I tested.

Can you reproduce the bug with this specific podcast?