OK. Thanks. The updated PDF looks good. I had been looking at IMSPL and didn´t know about this other site. I found the youtubes from Swan Alley a few days ago. But take another look. Doesn't it say that these videos are not available? That's the notice I am getting. So I still don't have an audio recording - and I know that there have been a few made. When did Swan Alley record this? The recording I heard was back in the 80's and could have been recorded earlier than that.