As a faithful reader of feed items that Rick shares I saw this one about WKRP coming to DVD and how they had to swap out some of the music because of some licensing issues.
I remember Chris Anderson mentioning WKRP in The Long Tail as the 'holy grail' or something along those lines of getting a TV show on DVD because of all of the issues with getting the music cleared. So it appears that they found a workaround. Also the post above references Gary Sandy and I figure he could use an extra link....
My copy of the book is up in my son's room (the kindergartner) no he isn't reading it himself, but dad reads it to him sometimes. He acts like he enjoys it.