How to put my mp3s on a CD using Windows Media or Nero Showtime or Real Player??????????????

I have a bunch of songs in mp3 format. I heard that you can put like 100 mp3s on a CD, but I don't know how to do it. Windows Media only let me put 18 mp3 songs on a CD. Does anyone know how I can put like 50 songs on a CD using Windows Media, Nero Showtime, or Real Player?