This is the text/audio I used in a phone call Bible study. For the audio program, I used IVG, easily the best of the numerous programs I tried out. This can be small enough (<20 modules) that it can be used with the IVG demo program including voicemail. It could also easily be expanded for a lot more Q & A. The voice recording was done by longtime DJ Ted Kramer.
Audio Links
Text Links

What Do We Know About Christ's Return?    Evolution    Is the Bible from God?    Is There a God?    Can We Understand the Bible?    Where are the Dead?    Who are We?

What is the Purpose of Baptism?    eternalsecurity.mp3 eternalsecurity.doc believe.mp3 whybelieve.doc Godsaveus.mp3 Godsaveus.doc repent.mp3 whyrepent.doc whogotoheaven.mp3 whoisgoingtoheaven.doc