Waveburner is an application that comes bundled with Logic Studio. If you installed the full Logic Studio package you will find it in your Applications folder. WaveBurner is used for assembling, mastering, and burning audio CDs.
If you wish to create the Audio CD in iTunes, then first bounce all your Logic tracks out. So if you have 12 tracks in your Logic project, bounce each one out as it's own separate track.
Then in iTunes Make a playlist, add the tracks to the playlist. And finally, go to File > Burn Playlist as Disc.