If I am playing a downloaded station and hit a thumbs up, does it impact my data use by altering the playlist that has already been downloaded? Wondering if using the thumbs up while listening to a downloaded station will increase data use. Or will it take this into account the next time that the station updates? Do downloaded stations update themselves periodically and does this only happen on wifi? How do I turn off cellular data usage for Pandora? I only want to play music that I have downloaded over WiFi.  Thanks   mod edit: format ... View more