That's pretty much why I suggested their forums. I've got shows that only were on tape and not released in another format because they have programs that will let you convert those. The fanatics who hang out at those forums own that software and the conversion machines. If they have it, they will convert it if they know someone is interested. They also spread the word.
It's sort of like those who are interested in the old Noir books from the 1940s and 50s. Most have not been released again but there are those who scan and convert the most in demand books as a hobby. Mobileread has a LOT of those books.