Unfortunately that is not an option because only the zip files contain the name of the singer and song, the compressed files do not. The only ones with name inside are the ones I put in the package I uploaded here for testing.
That was the way I was able to rip them from the cds. I'd have to extract thousands of files and rename them one by one (or better two by two because its a cdg file and a mp3 file) or rip everything again with a different method, but it's just not practical to do since it would take months doing it working at least 2-3 hours a day on it.
And if there's only one zipped file for each song it becomes more handy and I still save some disc space. A 8mb cdg+mp3 goes down to 6mb compressed.