I have a very similar issue. After a while, Pandora stops playing music. I can select playlists just fine, however, the song just sits there not playing. The little equalizer/visualizer at the top moves around, but the songs are always stuck at 0:00-0:00. The artwork loads, though, so the application has connectivity. I do not have to uninstall the Pandora application to get things working again. I'm able to reboot the Chromecast to temporarily fix the issue. This problem happens about once every day or two. Pandora is the only application that has any problems.
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