Thanks a lot ZZJ. I can now rip the songs with the co-working of TOR + Privoxy + Fiddler + PandoraSaver. But only ripping not listening because of the error "It's taking longer than expected..." The ripping keeps going on, despite that. I'm still experimenting what the correct launching sequence of the different apps is. Also, after a while this error pops up (see attached file). This happened a couple of times.
I'm sure things will get fixed over time but I'm already very happy. Thanks again ZZJ.