A friend of mine still has a couple of Cosby's recordings on vinyl. Once in a while we drag them out and play them. They are still as funny today as they were 30 or more years ago.
I wish I could remember the name of the company who puts this sortware out, but I've got some software that will allow you to rip the audio from DVDs into MP3 files. The beauty of that is I've now got audio recordings of "Bill Cosby, Himself" as well as all the Ron White and Blue Collar Comedy Tour DVDs.
"Bill Cosby, Himself" is one of the very funniest comedy concert performances, ever, by any comedian!
Mark