What method did you use to synchronize them in the “Create Multi-Camera Source Sequence” dialog?
You can do it by in point, marker, timecode or even by auto-comparing the wave-form (which is my favorite, when applicable). Also in that dialog you can tell it to just use one of your audio sources (which is actually the default) and then worry about sweetening the audio once the actual video cutting is done. Many edits will have an extra audio-only track anyways which if likely what you’d use for the master audio track.
PS… we’re always nice to newbies.. it’s later on that we get cranky (not really). As long as you make some effort to search out basic answers first, most people will be happy to help.