Thanks - although I'm not QUITE clear on your response. The menus, guide, etc. all work exactly as they should, and they rotate appropriately depending on the orientation. It's the actual live video feed that doesn't. I haven't tried it with a recording yet, but I will do that next. I'm assuming the same thing will happen, meaning it's related to the player code or its interaction with my specific tablet rather than the overall app.
Otherwise, this tablet is pretty cool. It's not a powerhouse, but the built in projector makes using Tablo more fun.