We decided to use a small bookshelf as the new stereo cabinet. I drilled holes through the particle board backing to get the cords and wires through.
We put a few holes in the back, some of them unnecessarily. It turns out that the middle shelf in the unit is not adjustable like the others, so some components did not end up where we thought they would. You'll have that, you know?
Now, if only I had that fancy Sirius radio service, I could listen to Martha's radio show. In the meantime, I'll just continue to improve my power tool skills.