You don't actually record project 5 songs to a CD. What you need to do is save an audio mixdown of the song, then burn that file to a CD. To save a mixdown, go to File > Export. You will several options in this window:
* Save In: this option determines which folder the mixeed file will be saved in.
* File name: This determines what the saved file will be called.
* Save as Type: This determines what kind of file will be saved. For an audio CD, choose "Wave files (*.wav)."
* Bits per Sample: Thisdetermines the bit depth of the resultant file. Files for audio CD's should be set to "16."
* Sample rate: This determines tha sampling rate of the resultant file. For an audio CD, set this to "44100 Hz."

Pressing the "Save" button will create the mixed file. Since project 5 does not have the ability to burn CD's, you will need to then use adifferent program to actually make the CD.