I'll preface by stating the obvious: I don't know $#@! about cars.
Anyway, during that really bad week of freezing weather we had here in Dallas, my wife's battery died. After we jumped it, she drove it to work, and when she came out it was dead again. Ended up getting a new battery that night.
Anyway, the speakers won't work. The radio turns on, the display works fine, all that. There's just no sound. If her memory is correct, they haven't worked since it was jumped the second time. I checked all the radio-related fuses, and they're fine. There wasn't anything in the manual that mentioned the speakers?