We started with Prima Latina but our son wasn’t particularly excited about it.  I’ve stumbled upon Getting Started With Latin at our local library. We gave it a try and it has since become our main tool for learning Latin.  The author William E. Linney has provided free MP3 audio files at his web site.  These include both classical  and ecclesiastical pronunciation, along with commentary audio file for each lesson.

http://www.gettingstartedwithlatin.com/

I’ve written a short review of Getting Started With Latin on Amazon.