Thank you for helping borisb and robot.

I checked and made sure that silent mode was not active. It was not active. Then I plugged it in and it worked through the headphones out. The only thing I did different yesterday was plug in the headphone jack and watch some movie clips and listen to RadioTime.

On a positive note, It sounds great through the headphone out. And if I had bought a Kindle DX instead, I would still have had an ereader screen... but now I also have the netbook-ish touchscreen and Android OS..... So my eDGE is still rockin'

I will try reinstalling the battery and if that doesnt work, I will contact Tech Support tomorrow.