But there is a more important question to answer. Stations that play folk music, experimental or new-age music would seem to be the perfect place for such songs. Filk fandom has its own set of lingo, inside jokes and secret messages, and these show up very often in the songs. And, to be blunt about it, most filk songs aren't good enough for air play. The songs are written by fans, not professional song writers.
Many people have difficulty making their songs rhyme and scan.
Filksong writing is fun to do, but not all the songs are good enough to wind up on tape. But now, making recordings is cheaper and easier than ever. More and more small companies are being created for the sole purpose of selling filk tapes. They have begun to send samples to such radio shows as Dr. Demento that give air play to alternative music, and filk fans are learning how to market themselves better. As the songs get greater air play, the audience grows, and filk may yet have a renaissance.