Sync. That’s the key to my ideal Podcast player.

I’d like it so if I listened to a podcast on one device (eg. my iPhone), stopped it and then started it again on another device (eg. a media PC) it would play from where I stopped it.

I’d say streaming would be ideal for this, but right now the mobile internet isn’t stable enough. So perhaps it’s downloaded on to the device and every x number of seconds (or when ‘stop’ is pressed) it checks in to a central service to notify it of how far into the podcast I am. It also does the same when I’ve finished listening to it.

I realise that having it downloaded AND available on several devices is a push, so it might have to be streaming.

And a web interface (both full and touch) would have to be available (that way you can be sure you can access it from a desktop/laptop/media PC and a mobile device). Although ideally over time you’d have native apps (eg. iPhone app, Android app, Boxee app etc).

Podcast Player Pro is a start, but it appears to be desktop web only (ie. wouldn’t work on the phone).