In this tutorial, we learn how to convert MP4 files to MP3 files in iTunes 8. With some purchased music, you can right click "convert to MP3", so check that out first. If you can't do this, create a new folder in iTunes, then go through your music to choose what you want to convert. Drag these into your new folder, then place a CD into your disc drive. After you do this, click on "burn disc", and a new window will pop up. It will ask you what speed you want and if you want to make it into an MP3 CD, click on this, then burn the disc and you're finished!