Your Flashlight battery are DEAD!!
It uses D-cell, but you only have C-cells. Here how you can make it work.
Step 1: What You Need.
GOOD NEWS: You got a jack, a spare WITH AIR!, A flashlight.
BAD NEWS: Flashlight D-Cell batteries are DEAD!
OK you have your Boom-Box, with good batteries, But it has C-Cells.
OK here is what you have:
2. DEAD D-cell batteries
3. good C-cell batteries
4. Sheet of foil.
Here how to make it work:
Step 2: What to Do.....
There is a 12 mm length difference between a C cell and a D cell, and quarters are about 2 mm thick, so if your flashlight has a really weak spring it could take bit more foil to do the job.