can I download a .tivo file to my iPad using Stream for playback when away from wireless?
just wondering if its only streaming or can I download for playback later. And can I get to my tivo system from the Internet (i.e. from outside my home network) or does it only work on devices connect to my home network?
The answer depends on your mobile device. Currently Android devices only Stream no Download available. Due to an iOS limitation Apple devices can't stream via 3G/4G and can only download on those networks.
If you connect to a public WiFi or any WiFi you can stream to any device. Copy Protected content can only stream on your home network. And iOS devices will only download protected content to your device IF it is allowed to delete the copy on your DVR, there is no way to move said content back to your DVR.
Download capability for Android is expected Spring 2015.