I don't know about pandora, but for podcasting there is gpodder which is the best podcast app you can find anywhere. its just soo effing good. http://maemo.org/downloads/product/Maemo5/gpodder/ It also has a desktop app which works with linux and windows http://gpodder.org/ you can read the review about the desktop version here http://www.softpedia.com/reviews/lin...w-119054.shtml (on N810 the desktop version and the maemo version have more or less same features)

also gpodder is one of the apps that uses the accelerometer and can be used in portrait mode.

About live streaming the N810 media default media player supports live streaming ootb so i dont see any reason why the n900 could be different