I'm using your PowerPress plugin with WordPress 3.4.2. I've discovered that there seems to be some kind of incompatibility with the original iPad running iOS 5.1.1 and Safari. Everything looks fine but I have no player. The same site looks fine on my iPhone running iOS 6.1.
You can see the site at http://www.hablandodetecnologia.com (sorry, it's in Spanish).
As you know Apple didn't provide an upgrade path for the original iPad. Is there any fix for this?