What happened to the 'Mobile Ed Conversations' Podcasts?

Suzy

A few months ago I discovered that there were podcasts available of interviews with various lecturers of Logos Mobile Ed courses. I enjoyed the ones I listened to (through the iPad podcast app) and was looking forward to hearing some of the others.

The other day I went to listen again, only to find that most have now disappeared from the list and only four remain.

Does anyone know if the others are still available anywhere?  

Thanks in advance.