@fred2 I'm happy to help.
Here are a couple of things to check:
Pandora has a separate volume control. Make sure it isn't all the way down, the volume control is located in the bottom right corner of the Pandora page.
If on a Windows machine, make sure that the "Wave Balance" volume is set at least 50% on your advanced volume control window. This is accessible by double-clicking the speaker in the lower-right corner of your screen.
Let me know you're able to hear the sound.
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