Thanks @@engleg. I looked at those resources before I got started. I finally got it working by disabling my firewall and antivirus protection, downloading the dll again, and then permanently excluding the dll from security scans. Norton Internet Security really doesn't like the modified dll, and was deleting it every time I downloaded it.
I'm having the exact same problem. Just did the cdlc setup today. I can see the songs in the list, but nothing happens after tuning. The screen just sits there with a picture of two amps and nothing else. Tried it with two different cdlc songs.