ffmpeg slideshow with mp3 audio but loop the slides till audio is finished?

OK first the disclaimer I am a NOOB

I have podcast that can run anywhere from 1-2 hours. It is recorded to .mp3 format and during the podcast we take some pics. Sometimes as few as 4 pics and other times as many as 70. What I would like to do is be able to point to the .jpgs in a directory and then specify the .mp3. Then have the slideshow repeat until the audio is done and write to mp4.

Is this possible with ffmpeg? Or any other program?

This needs to be scripted and can be done with Linux (fedora 20) or Windows.

I have found some good references for ffmpeg but could find nothing to tell me how to loop the slideshow until the audio finished.

Thanks for your time

~C