Now, I did a once-over of the tapes. I would surmise that I've heard a lot of these arguments before, even in the comments sections of this blog. The Psalm 110 lecture struck me, because I remember someone commenting about that section in the July/August timeframe. I'm under the impression they were repeating anti-missionary arguments they heard.
I would assume that there isn't anything in here that isn't addressed in Dr. Michael Brown's excellent books.
However, I'm going to try and find the time to sit down and listen to some of these and maybe create a few posts from this.
I may concentrate on Tovia Singer's lectures on the Resurrection, since that is an area of apologetics I know a good bit about. And I would direct you all to the aforementioned books by Dr. Brown.
Jews for Jesus also had an article concerning the tape series which can be found here.