I have their cassette tape since 1998 when a friend gave me a copy of it. I listen to it all the time. It has all three mysteries. As time goes by, I learned that they have a copy of it on CD. I search online and found Dana's site at that time. I got so excited, I bought the CD with the three mysteries and the songbook. I love it. I pray and sing everytime.
When the 4th mysteries were introduced, there was no way to get it from Dana and Ft. Kevin Scallon at that time.
However, this weekend, I was searching online and I found the CD with all four mysteries on Amazon.
Furthermore, I found someone uploaded the whole CD, one set of mysteries per video on YouTube.