Lyrics don't show

I recently downloaded Qmidi and tried to play a karaoke cd. The music played but no lyrics appeared. Is there something else I need to do to make the lyrics appear? I work on a macbook pro OS 10.10.5.
Any help would be appreciated.
Thanks.

Hello,

QMidi key features
Plays MIDI karaoke, MP3 ID3 lyrics, .CDG files, movie karaoke.

I understand the "Plays .CDG files" statement is a little bit confusing:

 ".CDG" files are files extracted from the CD+G compact discs. QMidi dos NOT display CDG graphics directly from CDs. You must first convert this stuff using a CDG ripper to create the compatible MP3-CDG files.

http://www.google.com/?q=cdg+ripper

I can't seem to find a cdg ripper for macintosh. I've looked at all the sites and they're all for windows. Can you direct me to a site that has one for macs?

kJams, MidiCo