How DO I CONVERT CDG Files for Karaoke?

So I have all these Karaoke Files and theres the mp3 file and the Cdg file for the lyric video. How am I supposed to open or convert these files so they run together etc. Basically what do I need to do on my mac to have these two files turn into a typical karaoke track I can open and have the music playing and read the lyrics. Please help.

Use a prog like kjams lite.Probably do all you need.hope this helps