After much some trouble I finally got my voltage readings correct, and my LED's are lit. However, I am getting no audio at all. I double checked my work and didn't find any issues. Any ideas?
On the headphone jack where the black wires meet, I would bend that wire that's poking through over and crimp it onto the terminal.
Can you post a picture of your meter? We can shoot some signal into the amp and take AC voltage measurements, but some meters won't resolve AC voltages all that well.