Comment 1 for bug 339069

Thanks for the report. This has already been fixed in trunk. The fix hasn't hit the PPA yet. If you'd like to fix this locally until an update rolls out, open the following file with a text editor:

/usr/share/avant-window-navigator/applets/pandora/pandora.py

Change the the URL line to:

 https://www.pandora.com:443/radio/tuner_8_8_0_0_pandora_mini.swf