Wanted: One Podcast Pipedream...

Clients on iOS, OS X, Android, Ubuntu and Windows Phone & Windows.

Syncs podcasts subscribed and track state per episode for audio and video podcasts.

e.g. I can subscribe to a new podcast on the WP7, put that down, pick up the iPad and continue listening to the same podcast then move onto another episode of another podcast, put that down then pick up the Android and start where I left off in that episode, come home, power up the PC and continue listening in Windows.

How close can I get if I'm in possession of all of the above platforms?