I have a cd audio disk with about 60 minutes of music and I want to copy and add another 3 minute song. The additional 3 minute song is now in mp3 format. I know a quick and dirty way to do this is rip the disk to mp3, add the 3 minute mp3 and then use Nero to convert/burn to a standard cd audio disk. However, I don't like the idea of converting the original disk twice, as it is already is the cd audio format. Also, I would like to use Imageburn as my burner, since my old copy of Nero doesn't work on Windows7. I also would like to use free software to complete the task.