My mother never had a radio or stereo on while she sewed. I think she was just happy to have a silent house while her four children were in school and the habit never changed.
I listen to audiobooks. I have always loved books on tape; now, the MP3 and free audiobooks online from our library has increased availability a hundredfold. I have seriously increased the number of books I read since I can double task while sewing and listen to a book at the same time. I have listened to everything from Charles Dickens to Clive Cussler and everything inbetween.
What do you listen to, if anything, while quilting?